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MicroLinkTM 56k i

1. 62 5 Description 82 5 1 Commands with effect on messages 82 b Appen lx Ei a a ee een 87 6 1 Status display and 87 2 vua me fee 88 6 3 Declaration of conformity 91 64A Warranty conditons 123252 chee i Ee 92 devolo MicroLink 56ki Introduction 1 Introduction MicroLink 56k i is an external desktop model housed in a robust flat aluminum case The hardware installation is fast and user friendly thanks to plug amp play support The manufactured modem MicroLink 56k is delivered as integrated sub components of an entire system If the system should not yet be installed please establish the following connections 1 1 Installation 1 Connection of the modem to the power supply 2 Connection of the modem to the serial interface of the computer 3 Connection of the modem to a telephone socket 4 Please insert the supplied devolo product CD into your CD ROM drive 5 To install the driver please follow the instructions of the hardware wiz ard The MicroLink 56k i driver contains information e g device name connect ing messages Initialization commands for your Windows operating system It could
2. ments are described in detail MicroLink 56k i Data transfer standard and protocols Power supply Dimensions and design Ambient conditions Transfer rates Transmission procedures Error correction Data compression Command set Fax operation Voice operation Dialing method External call BPS ADJUST Access control Operating surveillance devolo MicroLink 56k i V 17 V 21 V21channel2 V 22 V 22bis V 23 V 27 V 29 V 32 V 32bis V 33 V 34 V 80 V 90 K56flex Bell 103 Bell 212A full duplex 9 30 Vac 9 42 Voce Power adapter 230V 9 V AC 800 mA T V GS approved 108 x 38 x 140 mm W x H x D robust metal case 0 50 0 80 non condensing Receive 300 56 000 bps send 300 33 600 bps Asynchronous or synchronous V 42 and MNP Class 4 V 42bis and MNP Class 5 AT command set in accordance with V 250 V 253 14 400 2400 bps in accordance with V 17 V 33 V 29 and V 27ter fax command set Class 1 TIA EIA 578 TR 29 2 Class 2 SP 2388 and TR 29 2 Class 2 0 ITU T and 1 32 Class 1 0 ITU T and T 31 Voice command set in compliance with TIA EIA IS 101 and Rockwell Pulse and tone dialing Via flash function or digit Automatic in accordance with V 8 V 8bis and V 100 can be disabled Security callback automatic callback function Remote configuration with password protection 9 LEDs Power TxD transmit data RxD receive data DTR data terminal ready DSR
3. Answering machine function With a suitable voice software MicroLink b6k i can be used as an answering machine Access protection callback function and remote configuration The access protection is intended to protect your modem against the use or configuration by unauthorized modem users With the help of a password the so called supervisor password specific modem functions can be blocked A total of 5 access keys be used in order to establish access authorization to the modem O The callback function allows an automatic callback of the called modem A total of 19 callback numbers with respective passwords can be stored O The remote configuration allows you to configure your modem from any location you are calling from and can be combined with the automatic callback function Error correction The MNP4 and V 42 error correction protocols implemented in the modems guarantee a 10096 error free data transmission even with poor telephone connections MicroLink 56k i with or V 42 reliable error free connections can be established with other similarly equipped modems Data compression MicroLink 56k i contains the MNP5 and V 42bis data compression procedure By using MNP5 the transfer rate can be Increased up to factor 2 and up to factor 4 with V 42bis devolo MicroLink 56ki Introduction AT command language When communicating with MicroLink 56k 1 the AT command set i
4. If defects appear during the warranty period the warranty claims must be made immedi ately at the latest within a period of 7 days In the case of any externally visible damage arising from transport e g damage to the hous ing the person carrying out the transportation and the sender should be informed immedi ately On discovery of damage which is not externally visible the transport company and the sender are to be immediately informed in writing at the latest within 3 days of delivery Transport to and from the location where the warranty claim is accepted and or the repaired device is exchanged is at the purchaser s own risk and cost Warranty claims are only valid if a copy of the original purchase receipt is returned with the device devolo reserves the right to require the submission of the original purchase receipt Suspension of the warranty All warranty claims will be deemed invalid a b c d if the label with the serial number has been removed from the device if the device is damaged or destroyed as a result of acts of nature or by environmental in fluences moisture electric shock dust etc If the device was stored or operated under conditions not in compliance with the technical specifications if the damage occurred due to incorrect handling especially to non observance of the sys tem description and the operating instructions devolo MicroLink 56k i Appendix 3 e f g 5 i
5. About this manual This manual will inform you about all aspects of your MicroLink 56k i In addi tion a brief overview and a detailed description of the AT commands are pro vided Changes to this manual devolo products are characterized by ongoing further development It is therefore possible that the information printed in this manual is not current in all points Additional information in the Internet at www devolo de Our online services www devolo de are available to you around the clock should you have any queries regarding the MicroLink 56k i Package contents Please ensure that the delivery is complete before beginning with the installation of your modem MicroLink 56k i Power adapter Telephone line connection cable Modem connector cable V 24 RS232 cable Adapter D Sub9 D Sub25 CD ROM with drivers and user manual User manual in print devolo reserves the right to change the package contents without prior notice devolo MicroLink 56k i G CE conformity This product meets the requirements of the 1999 5 EG Directive R amp TTE and Is designed for connection to public telecommunications networks in the EU and Switzerland Connect the device to the public telecommunications network with the sup plied cable The declaration of conformity with the basic requirements can be found in the appendix of this manual Hints for CE conformity In some cases your modem can negotiate a lower data
6. The contents of register 529 can be stored in the non volatile memory using amp the AT W command The individual bits have the following significance Bit Dec Description 0 0 0 Automatic fallback to V 23 allowed Automatic fallback to V 23 not allowed 1 0 0 Asymmetric bit rates OFF 2 1 Asymmetric bit rates ON 2 3 9 0 Reserved 4 0 0 Rate renegotiation with V34 V 90 K56flex V 34 and V 32bis ON 16 1 Rate renegotiation with V34 V 90 K56flex V 34 and V 32bis OFF 5 0 0 Disable V 32 clear down sequence 32 1 Enable V 32 clear down sequence 6 0 0 V 32 9600 bps uncoded 64 1 V 32 9600 bps Trellis coded S30 Inactivity timer Valid parameters 0 to 255 10 sec Default value 0 timer off otore in non volatile memory AT amp W or AT W Register 530 can be used to set the time after which the modem automati cally breaks the connection if no data has been sent or received in the mean time A value of zero disables the inactivity timer devolo MicroLink 56ki Description of registers S31 534 535 Bit oriented option The contents of register 531 is stored in the non volatile memory with the commands AT amp W or AT W The individual bits have the following signifi cance Bit Dec Description 0 2 0 0 Reserved 3 0 0 Calling tone according to ITU T V 25 8 1 Calling tone according to ITU T V 8 4 6 0 0 Reserved 7 0 0 Dial lock of two hours after the 12th unsuccessful dialing attempt 12
7. Calling tone on guard tone 550 Hz AT amp G2 Calling tone on guard tone 1800 Hz AT amp G4 Calling tone off no guard tone AT amp G5 Calling tone off guard tone 550 Hz AT amp G6 Calling tone off guard tone 1800 Hz The guard tone is an additional signal that can be sent over the telephone line in V 22bis mode It is sent by the answering modem as long as the connection Is active his tone is not relevant in countries in which devolo modems are approved by the national telecommunications service The frequency of the guard tone cannot be modified in modem versions approved in Austria It is either set to 1900 Hz or off The calling tone is a periodic tone that is transmitted in the time period between dialing and connection As this tone can lead to disturbances in some foreign modems it is possible to suppress the transmission of the call ing tone devolo MicroLink 56k i AT commands Detailed description EJ H Hang up switch modem on ATHO Hang up 1 off hook The command ATHO is used to hang up an existing connection if the modem Is in the command mode after an escape command or a DIR transition from ON to OFF with a preceding AT amp DI refer to page 22 If the modem is offline it can be told to go off hook pick up the phone with the ATH1 command The modem holds the line for a maximum of 255 sec onds before hanging up This command must be located in the last position of a command line i e
8. modem settings The Commands and registers column lists AT commands and registers you can use to change the basic settings of the modem The More commands and registers column lists AT commands and registers for extended control of the modem Basic control features Configuration Commands and registers More commands and registers Basic initialization of the modem Control of call establishment dialing Call acceptance taking over of the line hang up Transition between command and transfer phase Control of speaker and of call signaling Read out modem information Control data compression Control error correction Control data flow monitoring Control dial lock or dial delay AT amp F ATD ATX ATA ATD ATH AT amp D2 SO ATO ATL ATM ATSJRING ATI ATS AT amp V ATZUD AT DS AT ES AT IFC 931 Bit 7 AT D AT D S6 S7 S8 814 bit 6 AT H 514 6 528 bit 7 92 AT R ADS AT V 586 CS devolo MicroLink 56ki 12 Control commands 2 3 2 2 4 Extended control features Configuration Commands and registers More commands and registers Operation with saved initializations Operate with saved phone numbers Protected access and callback Remote configuration Special control features Control modem signal lines Control the effects of DTR Control modem answers Control call tones Control modulation method Co
9. 000 bps 93939 Minimum receive bit rate 53 333 bps 54000 Minimum receive bit rate 54 000 bps 54667 Minimum receive bit rate 54 667 bps 56000 Minimum receive bit rate 56 000 bps max rx rate see above The range of values of the maximum receive bit rate corresponds to the range of values of the minimum receive bit rate If you want your modem in case of V 34 with a sending bit rate of 28 800 bps to set up a connection with automatic speed selection disabled enter the following command AT MS V34 0 28800 28800 With all modulation rates with the exception of V 90 and K56Flex only the first two parameters min tx Jrate max_ tx_Jrate will be taken into devolo MicroLink 56ki EJ AT commands Detailed description account Please also refer to the following tables listing the bit defined after modulation types V 90 Receiving direction 28000 29333 30667 32000 33333 34667 36000 37333 38667 40000 41333 42667 44000 45333 46667 48000 49333 50667 52000 53333 54667 56000 V 90 Sending direction 28000 29333 30667 32000 K56flex Receiving direction devolo MicroLink 56k i AT commands Detailed description EJ K56flex 32000 34000 3600 3800 40000 42000 44000 46000 48000 90000 92000 94000 96000 Sending direction V 34 32000 Sending and receiving direction V 32bis 2400 4800 7200 9600 12000 14400 16800 19200 21600 24000 26400 28800 31200 3360
10. CO No data buffering in the negotiation phase AT C1 Data buffering in the negotiation phase AT C2 No data buffering fallback character recognition AT A During a call acceptance with the setting AT ES 3 0 or AT ES 2 com mand determines how the modem treats characters that are neither an MNP nor an LAPM request If no MNP or LAPM request is recognized within three seconds the modem falls back to normal mode In the setting AT CO no buffering and no early fallback takes place In the setting AT C1 up to 200 characters can be buffered additionally that are sent to the port after the fallback to normal mode If 200 characters are devolo MicroLink 56ki EJ AT commands Detailed description amp C CS Example received before the three seconds have elapsed the modem falls back imme diately In the setting 2 the fallback to normal mode can be triggered by the character defined with the AT A command No buffering takes place This can be used to shorten the negotiation phase when the calling modem does not support error correction Significance of DCD AT amp CO DCD is always active AT amp C1 DCD displays existing carrier Communication programs usually evaluate the DCD line in order to check for an existing data connection The modem supports this function with the set ting AT amp C1 Query of the current modem settings AT CS lt command group gt lt number of lines This command i
11. EDUARD 333 07 35 SARAH 333 08 37 HANS 333 09 10 11 12 If the ATSP or AT R command is used and the P access flag is inactive the user Is prompted to enter the supervisor password If a wrong password Is entered the commands are not executed but answered with ERROR S Set and read the internal register ATSnzx Set register n to value x ATSn Read the value of register n ATSn Sets pointer to register n AT Display the value of the last referenced register default register Set the default register to value x The register number n and the register value x 0 255 are entered and dis played as numerical ASCII strings The valid values for x may be restricted Please refer to im Kapitel Description of registers auf Seite 62 for informa tion about the S register and changing bit oriented registers see Seite 44 If a register is set to an invalid value the command is ignored and returns devolo MicroLink 56ki EIN AT commands Detailed description 5 NS Example ERROR If an invalid setting is made in a bit oriented register only that par ticular setting will be ignored all other valid bits will be accepted Importance of DSR AT amp SO DSR always active AT amp S1 DSR active between answer tone and disconnection With this command the importance of the DSR control circuit is affected This interface line is usually always active In case of AT amp S1 adj
12. Remote configuration modification mode 6 7 0 Reserved This parameter is used to set the user password The password must have at least four but no more than eight characters This parameter can be used to save a phone number of up to 32 characters along with the user password in the list devolo MicroLink 56ki 32 AT commands Detailed description 0 0 R R Example Suppressing messages ATOO Enable modem result codes 01 Disable modem result codes ATO2 Messages off in answer mode With this command messages to the attached computer by the modem can be completely suppressed ATQ1 or suppressed in the answer mode only ATO2 Message after return to transfer phase 00 0 message after invalid escape sequence AT 01 No CONNECT message after invalid escape sequence The return of the CONNECT message can be suppressed after an invalid escape sequence with this command Display register contents AT R This command displays the current contents of the S registers 0 99 in two columns decimally and hexadecimally Display user password and parameters ATSR The AT R command displays the stored user passwords callback numbers and all other parameters on the screen at r devolo MicroLink 56k i AT commands Detailed description EJ 00 TOW 01 05 SPOCK 123456789 cau 02 05 CLODWIG 333 03 04 01 KIRK 05 06 33
13. connections All of the settings listed have the disadvantage of not including complete information concerning the type of connection The AT V8 command allows a complete evaluation CONNECT xxxx MNP with an MNP1 4 connection CONNECT xxxx MNP5 with an MNP5 connection CONNECT xxxx LAPM with a V 42 connection CONNECT xxxx LAPM V42BIS with a V 42bis connection Furthermore the AT V8 setting can be used to display Extended CONNECT messages that provide additional information about the transmission stand ard used e g CONNECT xxxx V32BIS LAPM V42BIS For extended devolo MicroLink 56k i AT commands Detailed description EJ amp W W CONNECT messages bit 6 of register S96 see page 81 must be set ATS96 64 Possible values for the transmission mode string are B103 B212A V21 V22BIS V23 V32 V32BIS V34 K56 V90 Save configuration profile AT amp WO Store extended configuration profile 0 AT amp WT Store extended configuration profile 1 This command can be used to save the current modem configuration in the non volatile memory of the modem Two different configuration profiles 0 and 1 can be stored The values are retained when the modem is switched off and are automati cally recalled the next time the modem is turned on Registers whose current value cannot be stored with the AT amp W command are stored with their default value AT amp F Therefore the AT amp W command overwrites those register value
14. data set ready RTS request to send CTS clear to send DCD data carrier detect OH off hook Appendix MicroLink 56k i Computer interface Line adapter Line type Electrical isolation oignal levels Power consumption Security Miscellaneous Operating systems CE conformity V 24 28 9 pin sub D Automatic bit rate and data format recognition Bit rate 300 230 400 bps asynchronous Data format 10 11 bit parity even odd none 7 e 1 7 0 1 8 n 1 8 6 1 Handshake RTS CTS XON XOFF Country specific Tip ring line 2 KV according TBR 21 According to TBR 21 2 75 W typ Sleep mode 1 75 W Supervisory curcuit Integrated watchdog Electrical supervision via power fail Power up call DTR dial 20 quick dialing memory Flash technology firmware update Integrated meter puls filter Integrated microphone Integrated loudspeaker On off switch Windows 98 Windows NT 4 0 Windows Me Win dows 2000 Windows XP CE compliant in accordance with R amp TTE technical requirements for all EU countries and Switzerland Tested in accordance with EN 55024 EN 55022 Class B EN 60950 TBR 21 EG 201 121 The device can be supplied with direct current DC If power is put into the socket a potential difference of 0 7V between the DC source ground and the interface ground occurs due to the rectifier diode If these grounds are shorted galvanically the electric current flows back via the interf
15. number and release date Display of current parameters Display product name Plug amp play Report self test result Low speaker volume Low speaker volume Medium speaker volume High speaker volume Data flow control on serial interface Display of current interface speed Display of computer bit rate recognition setting 0 AUTO Speaker always off Speaker on during call establishment Speaker always on Speaker on while waiting for answer tone outgoing call Plain text CONNECT messages dependent on ATW Plain text CONNECT messages independent of ATW Transition to online status Return to online state with retrain Display of modulation procedure and the telephone bit rate Control commands Command MS P 00 01 Q2 00 01 R R 5 5 55 S 10 amp T1 amp I3 amp T4 15 amp T6 T STO 11 U VO V1 amp V WO V1 V2 V8 Selection of the modulation procedure and the connection bit rate Pulse dialing Enter and save user password and callback number Return of messages from modem ON Return of messages from modem OFF Messages off in answer mode CONNECT message after invalid escape sequence No CONNECT message after invalid escape sequence Display register contents Display user password and parameters Set and read the internal register Importance of DSR Verbose display of the current configuration Set access keys Query of current access keys Fr
16. of jurisdiction is located in Aachen Germany in the case that the purchaser is a merchant If the purchaser does not have a court of jurisdiction in the Federal Republic of Germany or if he moves his domicile out of Germany after conclusion of the contract devo lo s court of jurisdiction applies This is also applicable if the purchaser s domicile is not known at the time of institution of proceedings The law of the Federal Republic of Germany is applicable The UN commercial law does not apply to dealings between devolo and the purchaser devolo MicroLink 56ki
17. parameters for Austria 0 5 rings Valid parameters for Switzerland 0 2 10 rings Default value 0 Store in non volatile memory AT amp W or AT W The automatic answering of calls can be set in the register SO If 50 0 every incoming call will be automatically answered The S0 value determines the number of ring pulses to wait before the call is answered If you enter an invalid value the modem automatically uses the nearest allowed value minimum or maximum as the number of rings to be waited for If for example in Germany the value 10 is entered the modem automat ically enters the value 9 If in Switzerland the value 1 is entered the modem automatically enters the value 2 With S0 being 0 the connection establishment can be aborted by any char acter except for LF Call establishment is not aborted however if bit 6 of register 514 has been set to 1 default 0 This setting permits the attached computer to send characters to the modem during call establishment Ring Counter Valid values 0 255 ring pulses Default value 0 Store In non volatile memory no Register 51 contains the number of rings of an incoming call The 51 value is reset to zero if after an interval defined in register 599 see page 81 no more devolo MicroLink 56k i Description of registers EJ 52 53 54 pulses received from the line 5 seconds by default During this interval no new calls can be identified and dialing i
18. set up a connection If the value 0 zero is entered the minimum bit rate is determined by the set ting of the parameters carrier and automode The lowest bit rate possi ble within the respective modulation type is selected A value higher than 0 zero states the minimum bit rate in bps used for calling attempts Optional numeric parameter that states the maximum data rate to be used by the modem to set up a connection If the value 0 zero is entered the maximum bit rate is determined by the set ting of the parameters carrier and automode The highest bit rate possi ble in the respective modulation type is set the maximum modulation type being additionally restricted by the bit rate set at the computer A value higher than 0 zero states the maximum bit rate in bps used for call ing attempts These optional parameters can be used to set other data rates for the receiv ing direction than for the sending direction devolo MicroLink 56k i AT commands Detailed description EJ The following settings are valid Parameter Value Description Carrier B103 Bell 103 enabled B212A Bell 212A enabled V21 V 21 enabled V22 V 22 enabled V23C V 23 enabled 235 V 23 half duplex V32 V 32 enabled V32B V 32bis enabled V34 V 34 enabled K56 56Kflex selected V90 V 90 enabled Automode 0 Automode function OFF 1 Automode function ON min tx Jrate 0 Automatic bit rate selection 75 Minimum send bit rate 75 b
19. subsequent commands are not executed Dumb mode 0 Normal operation AT H1 Dumb mode The AT H1 command can be used to set the modem into the dumb mode This means that an incoming call will always be answered as soon as the DTR line is active The only commands accepted in this operating mode are ATD dial ing and AT H Moreover all echoes and feedback messages such as OK RING CONNECT will be suppressed Polling is possible during call estab lishment To restore the normal operation of the modem enter the AT commands 0 AT amp F in two lines Display product information ATIO Report product code in nnn format ATH Report checksum ATI3 Display firmware version and date devolo MicroLink 56ki EJ AT commands Detailed description ATI Display the current parameters of the Hayes command set ATI6 Display product name ATI9 Display plug and play information ATI11 Report self test result ATIO displays a three digit ASCII string type number modem product code ATI displays the least significant byte of a 16 bit checksum of the firmware ROM as a three digit ASCII number ATIS displays the firmware version number and the firmware date This com mand corresponds to the AT V command ATIA is used to output the current modem configuration only Hayes com mands ATI6 displays the product name of the modem ATI9 displays a string for plug and play recogniti
20. support this protocol the modem will fall back to the data protocols stated in lt orig_fbk gt orig fbk otates possible data protocols offered by the modem of the remote side if the data protocol cannot be negotiated in the orig rqst otates the data protocols offered by the modem answer of the remote side The following settings are valid Parameter Value Description orig rqst 1 Connection only in the buffered mode 2 Negotiate error correction in accordance with V 42 without detect phase 3 Negotiate error correction in accordance with V 42 with detect phase devolo MicroLink 56k i AT commands Detailed description EN Example Parameter Value Description 4 Negotiate MNP 6 Negotiate V 80 synchronous access mode origi nate orig fbk 0 LAPM or MNP are accepted as error correc tion methods If no error correction can be negotiated it is attempted to set up a connec tion in the buffered mode with data flow moni toring and computer controlled speed 2 LAPM or MNP are accepted as error correction methods If no error correction method can be nego tiated the modem hangs up 3 Only LAPM is accepted as error correction method If no error LAPM can be negotiated the modem hangs up 4 Only MNP is accepted as error correction method If no MNP can be negotiated the modem hangs up ans fbk 1 Only buffered operation possible 2 LAPM or MNP are possible as error correction methods If no e
21. the modem to the connected computer are displayed as digits or words The mes sages in short form and plain text are covered in the chapter Description of messages Display of firmware version AT V This command displays the modem firmware version on the monitor This command corresponds to the ATI3 command see page 27 Display configuration profiles AT amp V This command displays the current configuration and the two stored config uration profiles O and 1 see also the AT amp W and AT W commands of the modem on the monitor devolo MicroLink 56ki EU AT commands Detailed description W CONNECT with error free connections ATWO No modified CONNECT messages ATW1 Identification of error free connections ATW2 Identification of MNP and V 42bis connections ATWS Identification of MNP V 42 and V 42bis connections This command controls the CONNECT messages for error corrected connec tions connections with MNP V 42 or V 42bis With ATWO modified CONNECT messages are always suppressed The CON NECT messages for error corrected connections are identical to the CON NECT messages for physical connections With ATWT1 the type of error corrected connection is not differentiated XXXX transmission bit rate CONNECTxxxx REL With ATW2 error corrected connections are differentiated into MNP and V 42 bis connections CONNECTxxxx REL MNP with MNP connections CONNECTxxxx REL LAPM with V 42 bis
22. the respective entry is to be devolo MicroLink 56k i Example AN mode password number AT commands Detailed description stored If for example an entry is to be stored in the fourth position the number 4 must be entered e g at p4 1 kirk 1701 Existing entries can be modified by entering the respective parameter thus overwriting the old setting For example if you want to change only the user password of an entry enter only the position and the new password for the respective entry To replace the password KIRK in the entry AT P4 1 KIRK 1701 by SPOCK ATSP4 1 SPOCIC 1701 enter the following at p4 spock If the AT Pposition command is used without additional parameters the respective entry 0 19 is entirely deleted from the list e g at amp p4 deletes the entry in position four This parameter can be used to set different security levels see the following table The individual values of the parameter mode are calculated by add ing the decimal values of the respective bits and have the following meaning Bit Dec Description 0 0 Entry locked 1 Entry active 1 2 0 Only password required for identification 2 Password and phone number required for identification 4 Prompt for password then callback of the stored phone number 6 prompt for password and phone number then callback of the entered number 3 0 Reserved 4 5 0 Remote configuration locked 16 Remote configuration display mode 32
23. transmission rate during extreme electromagnetic disturbance This occurs in order to reduce the risk of incorrect data communication Maintenance of an existing data link can nevertheless in most cases be ensured As soon as the disturbance is reduced or removed your MicroLink 56k i nego tiates a higher data transmission rate again devolo MicroLink 56k i TED Contents T Introductio 452058254 sae UAR 6 Su fe ENTRE ERO PERPE 6 1 2 Highlights of the MicroLink 56k i een 6 2 Control 9 2 1 Entering and executing AT commands 9 2 1 1 Escapo Command are eis 9 2 2 Bit oriented 10 2 2 1 Modifying bit oriented registers 10 2 3 Overview of AT command set and registers 10 23 1 Basic contol Teal BS ans aoo SS 11 2 3 2 Extended control features 12 2 4 Overview of the AT and AT command 12 3 AT commands Detailed description 17 3 1 Labeling of the default configuration 17 3 2 Extenaed Commit SOU ee 44 3 2 1 command 5 44 4 Description of registers
24. with CONNECT and the DCD signal line is ena bled The AT amp T3 command places the modem into a local digital loopback The loopback Is Initiated by the remote modem In this state the characters sent by the remote modem are not transmitted to the host but instead returned directly to the remote modem AT amp T4 and AT amp T5 enable or disable respectively the activation of the dig ital loopback by the remote modem The two commands can be used both devolo MicroLink 56k i AT commands Detailed description EJ T ST online and offline The current status is displayed with the ATI4 command AT amp T can only assume the values 4 and 5 The AT amp T6 command enables a remote digital loopback if the remote modem is set to AT amp T4 In this mode the remote modem does not pass the received characters to its host computer but instead returns them directly to the local modem The remote modem remains connected to the phone line off hook LED is on the DCD and CTS signal lines are switched off In this state the remote modem cannot be addressed by the connected computer system Inactivity timer n 0 to 255 10 seconds default value 0 This command can be used to modify the time after which the modem auto matically breaks the connection if no data has been sent or received in the mean time The value of AINT is a multiple of 10 seconds Valid values for n are 0 255 The default value 0 is used to
25. 0 Sending and receiving direction 4800 devolo MicroLink 56ki EN AT commands Detailed description 7200 9600 12000 14400 V 32 Sending and receiving direction 4800 9600 V 23C Receiving direction sending direction 15 1200 1200 75 V 23S Sending and receiving direction 1200 bps half duplex V 22bis Sending and receiving direction 1200 2400 V 21 Sending and receiving direction 300 BELL103 Sending and receiving direction 300 Bell212A Sending and receiving direction 1200 JRING Call signaling and RI line ATSJRING lt Ring gt lt RI_line gt This command can be used to control call signaling and the characteristics of the ring control line devolo MicroLink 56k i AT commands Detailed description Ei The following settings are valid Parameter Value Description Ring 0 Ring signaling off 1 Ring signaling on RI line 0 Allow ring control line RI M3 of the modem 1 ouppress the modem s ring control line RI M3 Example To disable ring signaling make the following entry at jring 0 devolo MicroLink 56ki EZ Description of registers 4 50 51 Description of registers The modem has internal registers with which you can control the configura tion see also command ATSn Please refer to the following description for the significance of the registers Automatic call answering Valid parameters for Germany 0 9 rings Valid
26. 00 seconds 90 seconds 10 60 seconds 60 seconds 10 100 seconds 90 seconds AT W The amount of time that the modem waits for the carrier after dialing is set in register 57 devolo MicroLink 56k i Description of registers EJ 58 510 511 Pause length of Valid values Default value otore in non volatile memory 0 8 seconds 2 seconds AT W The length of a dialing pause is determined in register 58 Delay for hang up after carrier loss Valid values Default value otore in non volatile memory 1 255 1 10 seconds 10 0 3 seconds AT W Register 10 determines the period of time after which the modem termi nates the connection if no carrier signal is detected This setting is relevant only for the transmission methods V 21 V 22bis and V 23 Dialing speed for tone dialing Valid parameters for Germany Default value for Germany Valid parameters for Austria Default value for Austria Valid parameters for Switzerland Default value for Switzerland otore in non volatile memory 85 to 95 1 1000 sec 90 90 ms 75 to 145 1 1000 sec 80 80 ms 70 to 105 1 1000 sec 80 80 ms AT W The speed of the tone dialing process i e the duration of each dialing tone can be changed in register 511 devolo MicroLink 56ki E Description of registers 512 Escape prompt delay If no further characters follow the three escape sequences within one second th
27. 30 400 bps Parameter Value Description Bit rate 0 Automatic bit rate recognition The AT IPR command displays the automatically recognizable bit rates Output of the modulation method and of the line hit rate AT MR lt parameter value This command is used to control the output of the negotiated modulation method and of the line bit rate before the connect message The receiving bit rate is output only if the sending and receiving bit rate are different The following settings are valid Parameter Value Description Parameter value 0 Output OFF 1 Output ON The feedback messages have the following format devolo MicroLink 56ki EIN AT commands Detailed description MS carrier automode min_ tx_ rate min_rx_rate max_ tx_ rate max_rx_rate min_rx_rate max_rx_rate carrier MRR lt bit_rate gt lt receiving_bit_rate gt Select modulation method AT MS lt carrier gt lt automode gt lt min_ tx_ rate gt lt max_ tx_ rate gt lt min_rx_rate gt lt max_rx_rate gt This command is used to select the desired modulation method Modulation method used for calling attempts If call establishment with the selected type of modulation fails the modem uses another modulation type to set up a connection The modulation type selection proceeds from higher to lower modulation types Optional numeric parameter that states the minimum data rate to be used by the modem to
28. 8 1 Dialing pause of 30 seconds after every unsuccessful dialing attempt a Bit 7 of register 531 is valid for Germany only In Austria and owitzerland bit 7 is reserved Configuration command Valid values 0 to 127 decimal Default value 42 otore in non volatile memory AT W Register S34 can be used to change the configuration command which Is used to change from the online state to the remote configuration state Number of callback attempts Valid values 1 99 Default value 3 Store in non volatile memory AT W In Register 35 the number of times your modem attempts to call back can be defined devolo MicroLink 56k i Description of registers 71 542 543 547 553 Wait for user password Valid values 20 120 seconds Default value 30 seconds otore in non volatile memory AT W The amount of time that the modem waits for the password entry after suc cessful call establishment is set in register 57 Callback delay Valid values 1 12 minutes Default value minute otore in non volatile memory AT W The value for the call delay of the modem is defined in register 543 Fallback character Valid values 0 62 64 125 127 decimal Default value 0 Store in non volatile memory AT amp W or AT W In register 547 the ASCII character n 1 127 that is evaluated as fallback character when the call is accepted see also command AT A page 17 can be defined For this purpose the c
29. ATH online ATZ online AT amp TO in analog loopback Termination via keystroke Termination via DTR Termination by level change Termination by synchronization loss Termination by clear down sequence No answer to automatic retrain 587 Bit mapped options Register 587 can be read only It contains information about the current con nection Bit Dec Description 0 4 1 1 Minimum send hit rate 75 bps 2 2 Minimum send bit rate 1200 bps 3 9 Minimum send bit rate 300 bps 4 4 Reserved 5 5 Minimum send bit rate 1200 bps 6 6 Minimum send bit rate 2400 bps devolo MicroLink 56ki Description of registers Bit Dec Description 7 7 Minimum send bit rate 4800 bps 8 8 Minimum send bit rate 7200 bps 9 9 Minimum send bit rate 9600 bps 10 10 Minimum send bit rate 12 000 bps 11 11 Minimum send bit rate 14 400 bps 12 12 Minimum send bit rate 16 900 bps 13 13 Minimum send bit rate 19 200 bps 14 14 Minimum send bit rate 21 600 bps 15 15 Minimum send bit rate 24 000 bps 16 16 Minimum send bit rate 26 400 bps 17 17 Minimum send bit rate 28 000 bps 18 18 Minimum send bit rate 28 900 bps 19 19 Minimum send bit rate 29 333 bps 20 20 Minimum send bit rate 30 667 bps 21 21 Minimum send bit rate 31 200 bps 22 22 Minimum send bit rate 32 000 bps 20 23 Minimum send bit rate 33 600 bps 0 0 Reserved S88 Bit mapped options Register S88 can be read only It contains information about the current con nection Bit
30. B2 command version 2 determines that the RING and CONNECT messages are displayed after the access procedure If a proper connection has been established the input of an ATD command is followed by a CON NECT message This setting however allows the best matching for call establishment without password protection After establishing the connection the modem does not immediately enter the transparent mode but activates its callback routine This routine prompts the devolo MicroLink 56k i AT commands Detailed description Example XC user at the remote modem to identify himself by entering his user password and if configured accordingly his phone number MicroLink 56k i password PHONE NUMBER password OK If the entries are correct the message password OK is displayed and the called modem immediately terminates the connection After the time set in register 543 see page 71 the phone number stored along with the user password is called automatically The modem will not enter the transparent mode before the remote user has entered his user password and if config ured accordingly his phone number again If the user does not enter a valid identification within the time defined in register 42 the called modem ter minates the connection If the callback function is disabled the modem immediately establishes a transparent connection No data buffering in the negotiation phase AT
31. Dec Description 0 0 0 No connection with MNP1 4 1 1 Connection with MNP1 4 1 0 0 No connection with MNP5 2 1 Connection with MNP5 2 0 0 No connection with V 42 4 1 Connection with V 42 devolo MicroLink 56k i Description of registers Dec Description 3 0 0 No connection with V 42bis CB 8 1 Connection with V 42bis 4 7 0 0 Reserved S89 Bit mapped options Register S89 can be read only It contains information about the current con nection Bit Dec Description 0 4 1 1 DCE line receive bit rate 75 bps V 23 2 2 DCE line receive bit rate 1200 bps V 23 3 3 DCE line receive bit rate 300 bps 4 4 DCE line receive bit rate 600 bps 5 5 DCE line send bit rate 1200 bps 6 6 DCE line receive bit rate 2400 bps 7 7 DCE line receive bit rate 4800 bps 8 8 DCE line receive bit rate 7200 bps 9 9 DCE line receive bit rate 9600 bps 10 10 DCE line receive bit rate 12 000 bps 11 11 DCE line receive bit rate 14 400 bps 12 12 DCE line receive bit rate 16 800 bps 19 13 DCE line receive bit rate 19 200 bps 14 14 DCE line receive bit rate 21 600 bps 15 15 DCE line receive bit rate 24 000 bps 16 16 DCE line receive bit rate 26 400 bps 17 17 DCE line receive bit rate 28 800 bps 18 18 DCE line receive bit rate 31 200 bps only V 34 19 19 DCE line receive bit rate 33 600 bps only V 34 20 20 DCE line receive bit rate 28 800 bps only V 90 21 21 DCE line receive bit rate 29 333 bps only V 90 22 27 DCE line receive bit r
32. Description of messages V 24 interface The interface between the modem and the computer consists of a variety of data control and signaling lines The condition of most of the interface lines Is displayed by LEDs on the front of the unit The pin assignment of the V 24 interface for 9 pin or 25 pin connectors is as follows 9 pi 25 ITU Designation P P DIN USA J direction n in T USA D UP 1 E1 101 GND Protective Ground Protective Ground 5 7 EZ 102 GND Signal Ground Operating Ground 3 2 D1 103 TxD Transmit Data send data modem 2 B D2 104 RxD Receive Data Receive data modem 6 6 1 107 DSR Data Set Ready Modem ready modem 8 5 2 106 CIS Clear to Send Ready to send modem 9 22 125 RI Ring Indicator Incoming call modem 1 8 5 109 DCD Data Carrier Detect Receive signal level lt modem 4 36 51 108 DIR Data terminal ready DEE ready modem 4 S2 105 RTS Request to send Switch sending on gt modem a Housing shield The designations in the table name the functions of the lines e g transmis sion data as related to the data terminal computer The interface lines have the following significance Computer terminal operational DTR Data terminal ready O The effect of this control line on the modem is determined by the command AT amp D Switch on transmission RTS Request to send Operational DSR Data set ready O This signal
33. FF DO Modem does not go online if DTR OFF ON D1 Modem goes online if DIR OFF ON 100 DSR and CTS always active V1 DSR shows answering tone and CTS is always ON D2 DSR always active and CTS tracks DCD D3 DSR shows answering tone and CTS follows DCD DR Display data compression method DS Select data compression method 0 Commands not echoed E1 Commands echoed 0 Automatic retrain OFF E1 Automatic retrain ON E0 Remote configuration OFF El Remote configuration ON EFCS FCS operation in V 42 mode ER Display error correction method ES Select error correction method ETBM Buffer handling after disconnect amp F Load default configuration 601 Country Selection devolo MicroLink 56ki EIN Control commands Command GMI GMM GMR GSN amp G0 amp G1 amp G2 amp G4 amp G5 amp G6 HO H1 H0 H1 0 1 4 16 I9 111 LO L1 L2 L3 IFC ILRR IPR MO M1 M2 M3 0 M1 00 01 MR devolo MicroLink 56k i Display company name Display product name Display version number Display serial number Calling tone on no guard tone Calling tone on guard tone 550 Hz Calling tone on guard tone 1800 Hz Calling tone off no guard tone Calling tone off guard tone 550 Hz Calling tone off guard tone 1800 Hz Terminating an existing call Go off hook Normal operation Dumb mode Report product code in nnn format Report checksum Report version
34. MicroLink 56k i 2003 devolo AG Aachen Germany While the information in this manual has been compiled with great care it may not be deemed an assurance of product characteristics devolo shall be liable only to the degree specified in the terms of sale and delivery The reproduction and distribution of the documentation and software supplied with this product and the use of its contents Is subject to written authorization from devolo We reserve the right to make any alterations that arise as the result of technical development Trademarks Windows Windows NT and Microsoft are registered trademarks of Microsoft Corp The devolo logo is a registered trademark of devolo AG All other names mentioned may be trademarks or registered trademarks of their respective owners oubject to change without notice No liability for technical errors or omissions devolo AG Sonnenweg 11 52070 Aachen Germany www devolo de Aachen September 2003 40140 0903 TED O Preface Thank you for placing your trust in this devolo product With the MicroLink 56k i you have chosen a modem which will permit you to take advantage of the new 56k technology In addition the MicroLink 56k i Is equipped with the AT command circuit according to V 250 V 253 Exacting manufacturing standards and stringent quality control are the basis for high product standards and consistent quality to ensure your fullest satis faction with this modem
35. The individual bits have the fol lowing significance Bit Dec Description 0 2 0 0 2400 bps 1 1 Reserved 2 2 2800 bps 3 3 3000 bps 4 4 3200 bps 5 5 3429 bps S86 Call failure reason code Register 586 can be read only The value of S86 indicates the reason for the last connection failure Dec Description 0 cO co N O devolo MicroLink 56k i Normal disconnection no error occurred Loss of carrier Negotiation phase failed modem at remote station has no error correc tion Remote modem is not answering protocol requests Remote modem is only functioning synchronously Modems could not find a common framing Modems could not find a common protocol Remote modem is sending wrong protocol requests oynchronous information data or flags missing connection termination after 30 seconds Normal disconnect initiated by the remote modem Remote modem is no longer answering disconnect after 10 re transmis sions Protocol violation Description of registers Dec Description 15 16 17 20 21 22 23 24 25 26 2 30 31 32 33 32 41 42 43 68 Compression error Inactivity time has elapsed No loop current Busy tone detected No dial tone detected No answer tone detected time out 57 No connection reached time out or wrong modulation type No common type of modulation No modem is answering at the number called Invalid login attempt or invalid password Automatic dialing
36. ace ground following the low est resistance Normally this does not cause problems devolo MicroLink 56k i EI Appendix Line port TAE6 N adapter Germany Line TAE6 contact Explanation A 1 Telephone line 4 5 3 b 2 Telephone line 5 D 2 6 Return line 6 LM 014 02 9 Return line 3 Not occupied 4 Not occupied Line port RJ11 line adapter Line Te EDAD Explanation socket 1 Not occupied 02 2 Return line b 3 Telephone line tip 123456 a 4 Telephone line ring D Return line Not occupied Line port 9 pin d sub DIN 9 pin d sub USA E1 U GND E2 5 GND D1 J TxD D 2 3 7 D2 2 RxD 1 6 DSR 6 CO 9 M2 8 CTS M3 9 RI M5 1 DCD 51 1 4 91 2 4 DIR 52 7 RIS devolo MicroLink 56k i Appendix 6 3 Declaration of conformity 4 KONFORMITATSERKLARUNG gem dem Gesetz ber Funkanlagen und Telekommunikationsendeinrichtungen FTEG und der Richtlinie 1999 5 EG R amp TTE EC DECLARATION OF CONFORMITY appropriate to the law of radio and telecom terminalequipment and Directive 1999 5 EC R amp TTE Die Firma devolo AG The Company Sonnenweg 11 52070 Aachen erkl rt da das Produkt MicroLink 56k i declares that the product Telekommunikations TK Endeinrichtung telecommunications terminal equipment radio equipment Verwendungszweck analoges Modem intended purpose den
37. acters are always echoed with and may be edited with lt or Entf Every entered line must be terminated with Enter When using AT Y the new password must be entered twice and be termi nated with Enter The repeated entry prevents a mistyped password from being stored as supervisor password If the two entries are identical the new password is stored as supervisor password in the non volatile memory and the AT Y command acknowledged with OK If the two entered passwords are not identical the command is aborted with an ERROR message Then the AT Y command must be used again in order to change the password Load configuration profile ATZO Load configuration profile 0 ATZI Load configuration profile 1 The ATZ command loads a configuration profile independently of the setting done with the AT amp Y command If a connection exists it will be aborted Then devolo MicroLink 56ki EUN AT commands Detailed description Example 3 2 3 2 1 A8E the parameter settings configuration profile 0 or 1 are loaded from the non volatile memory of the modem This command must be located in the last position of a command line i e subsequent commands are not executed If you have not yet stored a config uration profile AT amp W AT W the default configuration is loaded AT amp F Setting and reading of a hit in a register AT n m Sets the bit n to the value m n z 0to7 mz 0 to 1 AT n Reads the
38. al output of a A8X mes sage to the computer V8CallFunction C1 Output of the hexadecimal value of the V 8 Cl signals V8bis 0 V 8bis negotiation OFF 1 Modem controlled V 8bis negotiation ON CallfunktionRange Refer to ITU T V 8 specifications ProtokollFunktionRange Refer to ITU T V 8 specifications Store speed dial numbers AT ASTO lt position gt lt dial_string gt This command is used to assign the speed dial numbers 0 19 to a dial string The parameter position designates the speed dial number The speed dial numbers are executed by S position Special character for dialing stored phone numbers in the dialing command The ATDS command is used to dial the speed dial numbers page 21 AT ASTO can be used to enter the assigned speed dial numbers A speed dial number is deleted by entering the command for setting the speed dial number by entering only the position and an empty dial string refer to the ATD command page 21 devolo MicroLink 56ki EJ AT commands Detailed description Example DR DS The following settings are valid Parameter Value Description Position 0 19 Valid speed dial numbers Dial string 36 Maximum length of the dial string If you want to change only the third speed dial number enter the following command AT ASTO 3 Output of the data compression method AT DR lt parameter gt This command is used to control the output of the negotiated data compres sion method bef
39. also be found in the download area of our homepage www devolo de In case you need more information please refer to the system documenta tion O 1 2 Highlights of the MicroLink 56k i The following is an outline of the essential technical features of the modem to provide a quick overview of its functionality Transfer rates MicroLink 56k i supports the following transfer rates and velocities V 90 28 000 to 56 000 bps only receive bit rate O K56flex V 28 000 to 56 000 bps only receive bit rate O V 34 2400 to 33 600 bps duplex O V 32bis 4800 to 14 400 bps duplex 32 4800 to 9600 bps duplex O V 22bis 1200 to 2400 bps duplex devolo MicroLink 56k i Introduction EBD O V 23 1200 bps half duplex 75 1200 bps duplex 1200 75 bps duplex Bell 212A 1200 bps duplex O V 21 300 bps duplex Bell 103 300 bps duplex V 90 Standard of the international ITU standardization committee for the transmission of 56K modems Fax operation In addition to the types of modem operation the Micro Link 56k supports fax transmission and reception with speeds of 2 400 to 14 400 bps By using the fax commands Class 1 Class 1 0 Class 2 Class 2 0 and Class 2 1 the use of any desired standard fax software is possible Fax polling The modem supports fax polling The unit together with suitable fax software can be used for fax polling or for the operation of a polling system
40. ate MNP1 4 connection CONNECT MNP MNP5 connection CONNECT MNP5 V 42 connection CONNECT LAPM V 42bis connection CONNECT LAPM V42BIS devolo MicroLink 56ki E AT commands Detailed description 0 P prefix Return to online state with retrain ATOO Return to online state without retrain 01 Return to online state with retrain The command ATOO can be used to switch back into the transfer mode to resume online data transmission if the modem is in the command mode after an escape command or a DTR transition from ON to OFF with a preceding AT amp D1 This command must be located in the last position of a command line i e subsequent commands are not executed Set pulse dialing ATP This command selects the pulse dialing loop disconnect signaling method Enter and save user password and callback number ATSPO prefix AT Pposition mode password number The AT P command can be used to save up to 19 different user passwords in a list The following parameters separated by semicolons can be used The following entries are possible A separate dialing prefix for the callback numbers is saved in position 0 of the non volatile memory When using special dialing characters see ATD com mand make sure that they follow immediately after the semicolon e g at p0 t0w position This parameter followed by at least one more parameter defines the posi tion 1 19 in the non volatile memory where
41. ate 30 667 bps only V 90 23 23 DCE line receive bit rate 32 000 bps K56FLEX and V 90 devolo MicroLink 56ki Description of registers Bit Dec Description 24 24 DCE line receive bit rate 33 333 bps only V 90 25 25 DCE line receive bit rate 34 000 bps only K56FLEX 26 26 DCE line receive bit rate 34 667 bps only V 90 2 2 DCE line receive bit rate 36 000 bps K56FLEX and V 90 28 28 DCE line receive bit rate 37 333 bps only V 90 29 29 DCE line receive bit rate 38 000 bps only K56FLEX 30 30 DCE line receive bit rate 38 667 bps only V 90 31 31 DCE line receive bit rate 40 000 bps K56FLEX and V 90 32 32 DCE line receive bit rate 41 333 bps only V 90 33 33 DCE line receive bit rate 42 000 bps only K56FLEX 34 34 DCE line receive bit rate 42 667 bps only V 90 35 35 DCE line receive bit rate 44 000 bps K56FLEX and V 90 36 36 DCE line receive bit rate 45 333 bps only V 90 37 37 DCE line receive bit rate 46 000 bps only K56FLEX 38 38 DCE line receive bit rate 46 667 bps only V 90 39 39 DCE line receive bit rate 48 000 bps K56FLEX and V 90 40 40 DCE line receive bit rate 49 333 bps only V 90 41 41 DCE line receive bit rate 50 000 bps only Kb6FLEX 42 42 DCE line receive bit rate 50 667 bps only V 90 43 43 DCE line receive bit rate 52 000 bps K56FLEX and V 90 44 44 DCE line receive bit rate 53 333 bps only V 90 45 45 DCE line receive bit rate 54 000 bps only K56FLEX 46 46 DCE l
42. ce is not possible again before DTR returns from OFF to ON With AT amp D3 the modem s response is the same as with AT amp D2 In addition the modem is reinitialized by the DTR transition from ON to OFF see also ATZ and AT amp Y The modem does not report a RING with AT amp D2 and AT amp D3 if DTR is set to OFF Automatic call answering is not possible until after the DTR transition from OFF to ON A RING message with subsequent call answering can be enabled despite OFF by setting bit 7 in register 5268 D Manual dialing AT DO Modem does not go online if DTR OFF ON AT D1 Modem goes online if DTR OFF ON After a connection has been established manually by telephone the modem goes online with the setting AT D1 when the DTR interface line changes from OFF to ON It does not do so with the standard setting AT DO devolo MicroLink 56ki E AT commands Detailed description D E DSR CTS control AT DO DSR and CTS are always ON AT D1 DSR shows answering tone and CTS is always ON AT D2 DSR is always On and CTS shows DCD AT D3 DSR shows answering tone and CTS follows DCD With this command the importance of DSR and CTS control circuits is affected If a hardware data flow control is installed the adjustment of the AT D command for the CTS control circuit is not important No command echo to host ATEO Commands not echoed ATE1 Commands echoed This command selects whether
43. displayed Then the messages RNO CAR RIER and RCONNECT at the time of lt xoff gt appear as trace text as well as the entries of the remote modem user password and phone number If the password protection or the automatic callback function is active the following messages can be displayed at the remote modem The entered password is echoed on the screen The entered digits are echoed on the screen This message appears if password protected access is active without the callback function If the callback function is active the value for n defined in the 543 register is displayed This message appears after the third identification attempt has failed devolo MicroLink 56k i AT commands Detailed description EN U V amp V Take over current configuration AT U Save current configuration Changes made in the remote configuration mode remain active after leaving the remote configuration mode The AT U command can be used to take over the current configuration in the remote configuration mode Otherwise the settings are only valid within the current remote configuration session To keep the changes after the modem is switched off the configuration pro file must also be saved in the non volatile memory with the AT amp W or AT W command Messages in short form plain text ATVO Messages in short form as a digit ATV1 Messages in plain text This command allows you to choose whether the messages sent by
44. e 14 400 bps 16800 Minimum receive bit rate 16 800 bps 19200 Minimum receive bit rate 19 200 bps 21600 Minimum receive bit rate 21 600 bps 24000 Minimum receive bit rate 24 000 bps 26400 Minimum receive bit rate 26 400 bps 28000 Minimum receive bit rate 28 000 bps 28800 Minimum receive bit rate 28 800 bps 29898 Minimum receive bit rate 29 333 bps 30667 Minimum receive bit rate 30 667 bps 31200 Minimum receive bit rate 31 200 bps 32000 Minimum receive bit rate 32 000 bps 92292 Minimum receive bit rate 33 333 bps 33600 Minimum receive bit rate 33 600 bps 34000 Minimum receive bit rate 34 000 bps devolo MicroLink 56k i AT commands Detailed description Example Parameter Value Description 34667 Minimum receive bit rate 34 667 bps 36000 Minimum receive bit rate 36 000 bps 27223 Minimum receive bit rate 37 333 bps 38000 Minimum receive bit rate 38 800 bps 38667 Minimum receive bit rate 38 667 bps 40000 Minimum receive bit rate 40 000 bps 41333 Minimum receive bit rate 41 333 bps 42000 Minimum receive bit rate 42 200 bps 42667 Minimum receive bit rate 42 667 bps 44000 Minimum receive bit rate 44 000 bps 45333 Minimum receive bit rate 45 333 bps 46000 Minimum receive bit rate 46 000 bps 46667 Minimum receive bit rate 46 667 bps 48000 Minimum receive bit rate 48 000 bps 49333 Minimum receive bit rate 49 333 bps 50000 Minimum receive bit rate 50 000 bps 50667 Minimum receive bit rate 50 667 bps 52000 Minimum receive bit rate 52
45. e modem will respond in advance with OK and will continue to wait for a valid command line Valid values Default value otore in non volatile memory 0 to 255 1 50 sec 50 1 sec AT W The length of the escape prompt delay is established in register 12 514 Bit oriented option The contents of register 14 is stored in the non volatile memory with the commands AT amp W or AT W The individual bits have the following signifi Cance Bit Dec Description 0 5 0 0 Reserved 6 0 0 Polling not possible during call establishment 64 1 Polling possible during call establishment 7 0 0 Modem the answer mode 128 1 Modem in the originate mode a Polling not possible during call establishment the call establish ment is aborted by any character other than LF and XOFF b Polling is always possible in the dumb mode devolo MicroLink 56k i Description of registers 67 16 Bit mapped options This register is read only It contains information about the status of an active amp loopback Bit Dec Description 0 0 0 Local analog loop disabled 1 1 Local analog loop enabled 1 0 0 Reserved 2 0 0 Local digital loop disabled 4 1 Local digital loop enabled 3 0 0 No initiated remote digital loop 8 1 Initiated remote digital loop 4 0 0 Remote digital loop disabled 16 1 Remote digital loop enabled 9 7 0 0 Reserved 523 Bit oriented option The contents of register 523 is stored in the non volat
46. ending additional dial commands must be located at the end of a dial string Automatic Dialing with DTR AT D0 Disables DTR dialing ATSD1 Enables DTR dialing If DTR dialing is on AT D1 and the status of the control line changes from OFF to ON the modem will establish a connection with the number stored on position 0 Effect of DTR AT amp DO transition of DTR status AT amp D1 Switch to command phase if DTR OFF devolo MicroLink 56k i AT commands Detailed description EJ AT amp D2 Abort connection if DTR OFF AT amp D3 Abort connection and reinitialize if DTR OFF These commands determine how the modem reacts to a transition of the DTR interface line from ON to OFF When set to AT amp DO the modem ignores the state of the DTR line With AT amp D1 the transition of the DTR control line from ON to OFF has the following effects If the modem is in the command phase the transition has no effect During the establishment of a connection the ON to OFF DTR tran sition aborts the connection If the modem is in the transmission phase 1 6 with an existing connection it will switch to the command phase With AT amp D2 the transition of the DTR control line from ON to OFF has the following effects If the modem is in the command phase the transition has no effect During the establishment of a connection the ON to OFF DTR tran sition aborts the connection Call acceptan
47. equency selection method Normal operation Enable local digital loopback Enable remote digital loopback Remote digital loopback accepted Remote digital loopback blocked Enable remote digital loopback Inactivity timer Trace mode OFF Trace mode ON Save current configuration Messages in short form as a digit Messages in plain text Display of firmware version Display configuration profiles No modified CONNECT messages Identification of error free connections Identification of MNP V and V 42bis connections Identification of MNP V 42 and V 42bis connections devolo MicroLink 56k i EL Control commands Command 8 0 amp W1 WO WI X0 X1 X2 X3 X4 amp 0 amp Y1 Y Z0 71 devolo MicroLink 56k i Save extended configuration profile 0 Save extended configuration profile 1 Save extended configuration profile 0 Save extended configuration profile 1 Ignore dial tone ignore busy tone Ignore dial tone busy tone Wait for dial tone ignore busy tone Ignore dial tone evaluate busy tone Wait for dial tone evaluate busy tone End remote configuration Set pointer to configuration profile 0 Set pointer to configuration profile 1 Change supervisor password Load configuration profile 0 Load configuration profile 1 Setting and reading of a bit in a register AT commands Detailed description 3 3 1 Example A AT commands Detailed description Labeling
48. ers may be included Special characters Description Dialing method P Pulse dialing from this point on T Tone dialing from this point on External call l amp or Press flash button only for tone dialing Wait for dial tone W or Wait for second dial tone No wait for the dial tone before dialing the first number regardless of the ATX set ting The modem pauses for 6 seconds maximum time is set according to register S7 in Switzerland 10 second pause devolo MicroLink 56k i EZ AT commands Detailed description Example A D amp D Special characters Description Dial pause Dial pause as defined in register 58 Dial pause 1 second Dial pause 3 seconds Dialing of stored telephone numbers L Redial S m Dial the number stored with AT ASTO at location m Remain in command mode after dial string for the addi tion of further dialing commands in the event of exces sively long dial strings A modem is called up by telephone As soon as the remote modem sends an answer tone a modem connected to the same line as the telephone can take over the line with the ATD command see also ATA command page 17 In general special characters can be inserted at any point of the dial string and are effective beyond that point The special characters for dialing stored numbers are an exception see the AT ASTO command page 45 These special characters must be entered directly after ATD The character for app
49. f the device was opened repaired or modified by persons not contracted by devolo if the device shows any kind of mechanical damage if the warranty claim has not been reported in accordance with 3a or 3b Operating mistakes If it becomes apparent that the reported malfunction of the device has been caused by unsuitable hardware software installation or operation devolo reserves the right to charge the purchaser for the resulting testing costs 6 a b c d e f 0 h Additional regulations The above conditions define the complete scope of devolo s legal liability The warranty gives no entitlement to additional claims such as any refund in full or in part Compensation claims regardless of the legal basis are excluded This does not apply if e g injury to persons or damage to private property are specifically covered by the product lia bility law or in cases of intentional act or culpable negligence Claims for compensation of lost profits indirect or consequential detriments are excluded devolo is not liable for lost data or retrieval of lost data in cases of slight and ordinary neg ligence In the case that the intentional or culpable negligence of devolo employees has caused a loss of data devolo will be liable for those costs typical to the recovery of data where pe riodic security data back ups have been made The warranty is valid only for the first purchaser and is not transferable The court
50. grundlegenden Anforderungen des 8 3 und den brigen einschl gigen Bestimmungen des FTEG Artikel 3 der R amp TTE entspricht complies with the appropriate essential requirements of the FTEG Article 3 of R amp TTE and the other relevant provisions Harmonisierte Normen Gesundheit und Sicherheit gem 83 1 1 Artikel 3 1 a Harmonised Standards Health and Safety requirements contained in 83 1 1 Article 3 1 a EN 60 950 1992 A1 1993 A2 1993 A3 1995 A4 1996 A11 1998 Harmonisierte Normen Schutzanforderungen in Bezug auf die EMV 83 1 2 Artikel 3 1 b Harmonised Standards Protection requirements with respect to EMC 83 1 2 Article 3 1 b EN 55 024 1998 Teile parts 61 000 4 2 3 4 6 EN 55 022 1998 A1 2000 Teile parts EN 61 000 3 2 3 Schnittstellenspezifikation Netzabschlu eines ffentlichen Tk Netzes Interface specification Termination point of a public telecom network Spezifikation TBR 21 specification Diese Erkl rung wird verantwortlich abgegeben durch This declaration is submitted by Aachen 24 Juli 2002 Aachen 24 July 2002 Heiko Harbers Vorstandsvorsitzender CEO devolo MicroLink 56ki E Appendix 6 4 Warranty conditions The devolo AG warranty is given to purchasers of devolo products in addition to the warranty conditions provided by law and in accordance with the following conditions 1 a b c d 2 Warranty coverage The warran
51. he command line can then only be edited with lt backspace or executed with Enter Escape command Use the characters Strg X and Strg C to abort a command line or a screen output e g in case of displaying the register contents use AT R Commands that must be specified with a parameter may also be entered without a parameter The absence of a parameter corresponds to the param eter 0 e g ATL ATLO After the successful establishment of a connection to the remote site the modem switches from the command phase to the transfer phase Transfer phase means that a connection to a remote data station 1 6 to another modem exists The modem is online This is the case after suc cessful call establishment outgoing call as well as after answering a call devolo MicroLink 56ki Control commands 2 2 2 2 1 2 3 incoming call The exchange of data between two data stations can take place during this phase A renewed transition to the command phase and back also in the case of an existing connection is possible with the escape command and the command ATO The escape command consists of a series of three escape characters default setting and a valid command line After the three escape characters have been entered the modem is in the command state Data transfer is not interrupted until a valid command line has been recognized The escape character has nothing in common with the charac
52. ile memory with the commands AT amp W or AT W The individual bits have the following signifi cance Bit Dec Description 0 3 0 0 Reserved 4 5 0 0 7E1 16 1 8N1 32 2 701 48 3 7N2 6 7 0 0 Reserved N The value of bit 1 to 3 of register S23 is overwritten after every AT devolo MicroLink 56ki EJ Description of registers 525 527 528 DTR Delay Valid values 0 255 1 100 seconds Default value 5 0 05 seconds otore in non volatile memory AT amp W or AT W Register 25 can be used to set the minimum duration of a DTR change to have any effect This affects those features that are set with the AT amp Dn and AT Dn commands Bit mapped options The contents of register 527 can be stored in the non volatile memory using the AT amp W or AT W command The individual bits have the following signif icance Bit Dec Description 0 6 0 0 Reserved 7 0 0 Duplex 128 1 Half duplex Bit mapped options The contents of register 528 can be stored in the non volatile memory using the AT amp W or AT W command The individual bits have the following signif Bit Dec Description 0 4 0 0 Reserved 5 0 0 Bit rate tolerance 2 5 1 0 32 1 Bit rate tolerance 2 5 2 3 6 0 0 Reserved 7 0 0 Ring message and call acceptance not possible if DTR OFF 128 1 Ring message and call acceptance possible if DTR OFF devolo MicroLink 56k i Description of registers EJ 529 Bit mapped options
53. ine receive bit rate 54 667 bps only V 90 4 47 DCE line receive bit rate 56 000 bps K56FLEX and V 90 devolo MicroLink 56k i Description of registers 79 590 Current type of modulation Register 590 can be read only It contains information about the current type amp of modulation Bit Dec Description 0 3 0 0 BELL103 1 1 Bell 212A 2 2 V 23 3 3 21 4 4 V 22 5 5 V 22bis 6 6 V 32 7 7 V 32bis 8 8 Reserved g 9 V 34 10 10 KbGFLEX 11 11 V 90 4 0 0 Reserved 5 32 0 Full duplex Operation 1 Half duplex Operation 6 64 0 Modem Operation 7 128 0 Symmetrical connection receive bit rate send bit rate 1 Asymmetrical connection receive bit rate send bit rate devolo MicroLink 56ki E Description of registers 593 Bit oriented option The contents of register 593 is stored in the non volatile memory with the commands AT amp W or AT W The individual bits 0 to 16 decimal have the following significance Bit Dec Description 0 4 0 0 Computer side bit rate 300 bps Computer side bit rate 300 bps 2 2 Computer side bit rate 300 bps J 3 Computer side bit rate 300 bps 4 4 Computer side bit rate 600 bps 5 5 Computer side bit rate 1200 bps 6 6 Computer side bit rate 2400 bps 7 7 Computer side bit rate 4800 bps 8 8 Computer side bit rate 7200 bps 0 9 Computer side bit rate 9600 bps 10 10 Computer side bit rate 12 000 bps 11 11 Computer side bit rate 14 400 bps 12 12 Com
54. ing buffer gt lt receiving buffer gt lt timer gt This command controls the data management in the modem buffer after the termination of a connection Handling of the data in the sending buffer if the local computer terminates the connection Handling of the data in the receiving buffer if the remote station terminates the connection devolo MicroLink 56k i AT commands Detailed description EIN GCI GMI GMM GMR The following settings are valid Parameter Value Description Sending buffer 0 Delete data in the sending buffer in case of connec tion abort Receiving buffer 0 Delete data in the receiving buffer in case of connec tion abort Country Selection AT GCl lt parameter value This command is used to select the country where you want to use the Micro Link 56k i By default the modem is configured for Germany The following settings are valid Parameter Value Description Parameter value 04 Germany 0 Austria Ab owitzerland Display company name AT GMI With this command the company name is displayed Display product name AT GMM With this command the product name is displayed Display version number AT GMR devolo MicroLink 56ki EZ AT commands Detailed description GSN IFC DCE by DTE DTE by DCE ILRR With this command the version number is displayed Display serial number AT GSN With this command the serial number is displayed Flow co
55. izes a busy tone and outputs the feedback BUSY or if it ignores the busy tone and aborts the dialing attempt with NO CARRIER With the setting ATXO only the message CONNECT or 1 is output inde pendently of the speed and the kind of connection with without error correc tion data compression End remote configuration AT X End remote configuration The AT X command is used to end the remote configuration A transition into the online phase takes place Set pointer to configuration profile AT amp YO Set pointer to configuration profile to 0 AT amp Y1 Set pointer to configuration profile to 1 devolo MicroLink 56k i AT commands Detailed description ES Y You can use this command to determine which of the two stored configura tion profiles 0 or 1 is loaded and used when the modem is turned on This setting is globally and permanently effective and is stored at once Change supervisor password ATSY The supervisor password can be changed with the AT Y command An authorized modem user must identify himself by entering the supervisor pass word to access the modem functions The factory default supervisor pass word is ELSA This default password can be changed with the AT Y command The password must have at least four but no more than eight characters Valid characters are digits upper case letters and special characters Lower case letters are treated as upper case letters internally Entered char
56. line is normally always active ON but is controlled by the commands AT D and AT amp S Clear to send CTS Clear to send O This output is normally always active ON but is controlled by the commands AT D ATNFC and AT amp R devolo MicroLink 56ki EJ Description of messages Incoming call RI Ring indicator O This modem output becomes active ON as soon as the modem rec ognizes an incoming call also refer to the ATA command Incoming calls are detected only if the DTR control line is active ON or the command AT amp DO has been issued Connection DCD Data carrier detect O This modem output normally becomes active ON when the modem has established a valid connection devolo MicroLink 56k i Appendix 87 D 6 6 1 Appendix Status display and troubleshooting The LEDs on the front pane show the condition of the interface lines or the condition of the modem Behind Micro is the internal microphone Microphone Modem turned on Data to modem Data from modem Computer operational Modem operational Hardware handshake control line to the modem Hardware handshake control line to the modem Connection established oeo0c0c00009 9 Modem online off hook devolo MicroLink 56ki Appendix 6 2 Technical data Users with specific technical interests should refer to this chapter for detailed information on MicroLink 56k i All connections and their pin assign
57. m Plain text 1 CONNECT 300 5 CONNECT 1200 10 CONNECT 2400 11 CONNECT 4800 devolo MicroLink 56k i Description of messages EJ Short form Plain text 12 CONNECT 7200 13 CONNECT 9600 14 CONNECT 12000 16 CONNECT 14400 21 CONNECT 300 REL 22 CONNECT 1200 REL 23 CONNECT 2400 REL 24 CONNECT 4800 REL 25 CONNECT 7200 REL 26 CONNECT 9600 REL 2 CONNECT12000 REL 28 CONNECT 14400 REL 51 CONNECT 1200 HX 52 CONNECT 75 1200 53 CONNECT 1200 75 110 CONNECT 16800 111 CONNECT 19200 112 CONNECT 21600 113 CONNECT 24000 114 CONNECT 26400 115 CONNECT 28800 116 CONNECT 31200 117 CONNECT 33600 120 CONNECT 16800 REL 121 CONNECT 19200 REL 122 CONNECT 21600 REL 123 CONNECT 24000 REL 124 CONNECT 26400 REL 125 CONNECT 28800 REL 126 CONNECT 31200 REL 127 CONNECT 33600 REL 150 CONNECT 32000 151 CONNECT 34000 devolo MicroLink 56ki EIN Description of messages Short form Plain text 152 CONNECT 36000 153 CONNECT 38000 154 CONNECT 40000 155 CONNECT 42000 156 CONNECT 44000 157 CONNECT 46000 158 CONNECT 48000 159 CONNECT 50000 160 CONNECT 52000 161 CONNECT 54000 162 CONNECT 56000 170 CONNECT 32000 REL 171 CONNECT 34000 REL 172 CONNECT 36000 REL 173 CONNECT 38000 REL 174 CONNECT 40000 REL 175 CONNECT 42000 REL 176 CONNECT 44000 REL 177 CONNECT 46000 REL 178 CONNECT 48000 REL 179 CONNECT 5000 REL 180 CONNECT 52000 REL 181 CONNECT 54000 REL 182 CONNECT 56000 REL devolo MicroLink 56k i
58. nt signal level in dial line operation Valid values 10 15 x 5 dBm Default value 10 10 5 dBm otore in non volatile memory AT W In register S64 the telephone line transmission signal level of the modem can be changed A value of 10 corresponds to a transmission level of 10 5 dBm devolo MicroLink 56k i Description of registers 565 Output of the received signal level In register S65 the received signal level can be output in dBm Register 565 amp can be read only S66 Bit mapped options In register 566 the symbol rate offered in V 34 operation is defined With this option certain symbol rates can be suppressed The settings for this register can be stored to non volatile memory with the command AT W The individ ual bits have the following significance Bit Dec Description 0 0 0 oymbol rate 2400 bps OFF 1 Symbol rate 2400 bps ON max 21 600 bps 1 0 Reserved 2 0 0 oymbol rate 2800 bps OFF 4 1 Symbol rate 2800 bps ON max 24 000 bps 3 0 0 Symbol rate 3000 bps OFF 8 1 Symbol rate 3000 bps ON max 26 400 bps 4 0 0 oymbol rate 3200 bps OFF 16 1 Symbol rate 3200 bps ON max 31 200 bps 9 0 0 oymbol rate 3429 bps OFF 32 1 Symbol rate 3429 bps ON max 33 600 bps 6 7 0 0 Reserved devolo MicroLink 56ki EIN Description of registers S84 Bit mapped options Register 584 stores the symbol rate established during a V 90 K56flex or V 34 connection This register is read only
59. ntrol at the serial interface AT FCZ DCE by DTE DTE by This command is used to set the flow control at the serial interface This parameter is used to control the method for the monitoring of the data flow in the direction of the remote modem the method preset by the computer This parameter specifies the method preset by the modem for the control of the data flow in the direction of the remote computer The following set tings are valid Parameter Value Description DCE by DTE 0 No flow control 1 XON XOFF flow control 2 RTS flow control 3 XON XOFF flow control XON XOFF characters are passed on to the remote modem transparently DTE by DCE 0 No flow control 1 XON XOFF flow control 2 CTS flow control Output ofthe data rate of the serial interface AT ILRR lt parameter value devolo MicroLink 56k i AT commands Detailed description EJ IPR MR This command is used to switch the output of the bit rate of the computer on The feedback message has the following format ILRR lt bit rate of the com puter gt The following settings are valid Parameter Value Description Parameter value 0 Output OFF 1 Output ON Set bit rate of the computer AT IPR lt Bitrate gt With this command the bit rate recognition is set The bit rate of the compu ter is identified automatically The following bit rates are supported 300 600 1200 2400 4800 7200 9600 19 200 38 400 57 600 115 200 2
60. ntrol data format Control telephone side speed AT amp V AT amp W AT W AT amp Y AIZ AT ASTO AT Y AT S AT P AT R AT E AT U AT X AT amp C AT amp D ATE ATV AT amp G AT MS 928 bit 0 1 553 AT MS 535 542 543 553 534 AT amp S AT D AT D S28 bit 7 AT amp D AT H AT M 996 Overview of the AT and AT command set A complete description of the AT command set can be found in the chapter AT commands Detailed description Command Meaning A Answering an incoming call A Fallback character in the negotiation phase A8E V 8 and V 8bis operation control ASTO Store speed dial numbers devolo MicroLink 56k i Control commands Command Meaning 5 0 No callback B1 RING and CONNECT are displayed before the access procedure B2 RING and CONNECT are displayed after the access procedure 0 No data buffering the negotiation phase C1 Data buffering in the negotiation phase 2 No data buffering fallback character recognition amp CO DCD is always active amp C1 DCD displays existing carrier CS Query of the current modem settings D Establishing a connection D0 Disables DTR dialing D1 Enables DTR dialing amp 00 Ignore transition of status amp D1 owitch to command phase if DTR ON OFF amp D2 Abort connection if DTR ON OFF amp D3 Abort connection and reinitialize if DTR ON 2 O
61. o MicroLink 56ki AT commands Detailed description B This command defines the character that is regarded as fallback command during call acceptance AT C2 and AT ES 3 0 or AT ES 2 refer to page 19 and 48 respectively have to be set for this command If the modem receives this character in the negotiation phase while trying to establish an error corrected connection setting AT ES 3 0 or AT ES 2 it falls back to normal mode immediately The fallback character is not passed to the serial port As soon as the modem receives a SYN character 22 deci mal the fallback character recognition is switched off The default setting 0 disables the fallback character recognition entirely Activate password protection and automatic callback ATSBO Nocallback ATSB1 RING and CONNECT are displayed before the access procedure ATSB2 RING and CONNECT are displayed after the access procedure If your modem is used by several persons you can use the password protec tion to restrict the access to your modem Five so called access flags can be used to define which modem functions may be used The automatic callback feature with password protection enables your modem to call another modem back automatically after it has been called ATSBO command disables the callback function The AT B1 command version 1 determines that the RING and CONNECT messages are displayed before the access procedure The AT
62. of the default configuration The character marks the default AT command settings The standard values of the individual register bits are marked in bold type Answer incoming call ATA Incoming calls can be answered using this command An incoming call is indi cated by the line RI ON and unless the modem result codes are disabled reported by the message RING verbose form or 2 abbreviated form If the automatic call acceptance function is enabled a call cannot be accepted manually i e with the ATA command as the line is disconnected upon the entry of any character except for line feed see register S0 page 62 Call establishment is not aborted however if bit 6 of register 14 has been set to 1 default 0 This setting permits the attached computer to send characters to the modem during call establishment Furthermore this command allows an existing telephone connection voice to be taken over by the modem data This requires that modem and tele phone are connected to the same line see also ATD command page 21 A telephone connection is established The parties agree on a transmission format transmission protocol etc The change to the online state takes place by entry of ATA by the one party and subsequent entry of ATD by the other party The parties must also agree on which command is to be given on which side Fallback character in the negotiation phase AT An n 0 62 64 125 127 default 0 devol
63. ommand AT C2 see page 19 must be set The default setting 0 disables the fallback character recognition entirely Bit oriented option The contents of register 53 is stored in the non volatile memory with the commands AT amp W or AT W The setting of the bits 0 to 1 is only effective for the file format between the modem and the computer The setting is only effective in the transfer phase The telephone side data format is always devolo MicroLink 56ki EL Description of registers 8N1 regardless of this setting In the default setting the data format from register 523 is used The individual bits have the following significance Bit Dec Description 0 1 0 0 10 bit data format in the transfer phase 8N1 7E1 701 or 7N2 1 1 11 bit data format in the transfer phase 8E1 2 2 11 bit data format in the transfer phase 801 3 3 11 bit data format in the transfer phase 8N2 247 0 0 Reserved 554 Bit oriented option This register is independent of the command AT amp F but dependent of the command ATMnh The settings for this register can be stored to non volatile memory with the command AT W Bit Dec Description 1 0 0 The serial speed is loaded from profile by new initiali zation 2 1 The serial speed is not changed in case of new initiali zation 2 0 0 XOFF software handshake remains unchanged in case of new initialization 4 1 XOFF software handshake is reset in case of new ini tialization S64 Setting of the se
64. on e g for Windows 95 ATI11 displays the result of the self test the modem automatically performs after being switched on L Speaker volume ATLO Low speaker volume ATL1 Low speaker volume ATL2 Medium speaker volume ATL3 High speaker volume This command controls the volume of the modem speaker M Speaker control ATMO Speaker always off devolo MicroLink 56k i AT commands Detailed description EJ ATM1 Speaker on during call establishment ATM2 Speaker always on ATM3 Speaker on while waiting for answer tone outgoing call The speaker can be permanently on or off or it can be switched on during the connection establishment phase dialing and waiting for an answer tone 1 or it can be switched on only during the transition into the online state This setting is used to influence also the signaling via 554 of a pending call by ringing Plain text CONNECT messages 0 Plain text CONNECT messages dependent on ATW AT M1 text CONNECT messages independent of AT V This command influences the verbose CONNECT messages for error cor rected connections connections with MNP V 42 or V 42bis With the default setting 0 the return of plain text CONNECT messages Is dependent on the setting of the command ATW With 1 the following result codes are displayed upon successful con nection regardless of the setting of the ATW command and the transmission bit r
65. ore the connect message The following settings are valid Parameter Value Description Parameter 0 Output OFF 1 Output ON The following are possible feedback messages by the modem before the out put of the connect message DR NONE no data compression method selected DR V42B V 42bis selected DR ALT MNP5 selected Data compression method AT DS lt direc tion gt lt compression_negotiation gt lt max_dict gt lt max string This command controls the data compression The default setting is AT DS 3 0 2048 32 so the modem automatically recognizes which com devolo MicroLink 56k i AT commands Detailed description EB direction Compression negotiation max dict max string EFCS ER pression method depending on the capabilities or setting of the remote modem to use select data compression The connection is not interrupted if no data compression method has been negotiated otates the maximum number of dictionary entries for V bis data compression to be negotiated This can be used by the computer to restrict the length of the code word sent based upon the knowledge of the kind of the user data to be sent Maximum string length possible for V 42bis data compression The following settings are valid Parameter Value Description direction 0 No data compression 3 Bidirectional V 42bis MNP5 data compres sion Compression_ 0 The connection is not interrupted if no data negotia
66. ps 300 Minimum send bit rate 300 bps 600 Minimum send bit rate 600 bps 1200 Minimum send bit rate 1200 bps 2400 Minimum send bit rate 2400 bps 4800 Minimum send bit rate 4800 bps 7200 Minimum send bit rate 7200 bps 9600 Minimum send bit rate 9600 bps 12000 Minimum send bit rate 12 000 bps 14400 Minimum send bit rate 14 400 bps 16800 Minimum send bit rate 16 800 bps 19200 Minimum send bit rate 19 200 bps 21600 Minimum send bit rate 21 600 bps 24000 Minimum send bit rate 24 000 bps 26400 Minimum send bit rate 26 400 bps 28000 Minimum send bit rate 28 000 bps 28800 Minimum send bit rate 28 800 bps devolo MicroLink 56ki EJ AT commands Detailed description Parameter Value Description 29333 Minimum send bit rate 29 333 bps 30667 Minimum send bit rate 30 667 bps 31200 Minimum send bit rate 31 200 bps 32000 Minimum send bit rate 32 000 bps 33600 Minimum send bit rate 33 600 bps max tx Jrate see above The range of values of the maximum send bit rate corresponds to the range of values of the minimum send bit rate min rx rate 0 Automatic bit rate selection 75 Minimum receive bit rate 75 bps 300 Minimum receive bit rate 300 bps 600 Minimum receive bit rate 600 bps 1200 Minimum receive bit rate 1200 bps 2400 Minimum receive bit rate 2400 bps 4800 Minimum receive bit rate 4800 bps 7200 Minimum receive bit rate 7200 bps 9600 Minimum receive bit rate 9600 bps 12000 Minimum receive bit rate 12 000 bps 14400 Minimum receive bit rat
67. puter side bit rate 19 200 bps 18 13 Computer side bit rate 38 400 bps 14 14 Computer side bit rate 57 600 bps 15 0 Reserved 16 16 Computer side bit rate 115 200 bps 5 7 0 0 Reserved The 593 value is overwritten after every AT devolo MicroLink 56k i Description of registers EIN 596 Bit oriented option The contents of register 596 is stored in the non volatile memory with the amp command AT W The individual bits have the following significance Bit Dec Description 0 1 0 0 Decimal display of S registers 1 1 Hexadecimal display of S registers 2 2 Binary display of S registers 2 0 0 Message Continue with any character yes 4 1 Message Continue with any character no 3 0 0 Display of messages in plain text German 8 1 Display of messages in plain text English 4 0 0 Reserved 5 0 0 The receive bit rate is output in the CONNECT mes sage 32 1 The send and receive bit rates are output in the CON NECT message 6 0 0 No output of the modulation method with extended CONNECT message 64 1 Output of the modulation method with extended CON NECT message 7 0 0 Reserved 599 Time difference between ring pulses Valid values 10 255 1 10 seconds Default value for Germany 75 5 seconds Default value for Austria 60 6 seconds Default value for Switzerland 50 5 seconds otore in non volatile memory AT amp W or AT W The maximum allowed delay between received ring tones is set in register 599 Usually the standa
68. rd value of 7 5 seconds need not be changed If how ever ring pulses are sent at longer intervals in a telecommunications service network increasing the maximum delay in register 599 prevents the ring counter see register 51 from being reset to zero after each ring devolo MicroLink 5Bk i EZ Description of messages 5 5 1 Description of messages Commands with effect on messages Insofar as the command 01 is not active messages off the modem will acknowledge input commands and provide messages regarding incoming calls or the establishment of a connection for example With the default setting ATV1 the modem returns messages in plain text followed by and a line feed character With the command ATVO the messages are returned in short form as a digit with a leading or concluding Eier V1 vo Description OK 0 Command line executed RING 2 Incoming call NO CARRIER 3 No connection established or inactivity timer expired ERROR 4 Error during command input NO DIALTONE 6 No dial tone detected BUSY 7 Called station busy DIAL LOCKED 8 Dial function locked NO ANSWER 10 After special dialing character no silence iden tified DELAYED Dialing delay with alternative dial lock CONNECT Messages The CONNECT messages i e the messages regarding a successful connec tion are controlled by the AT M ATW and ATX commands The following table provides an overview of possible CONNECT messages Short for
69. rror correction method is negotiated a buffered connection is set up 4 LAPM or MNP are possible as error correction methods If no error correction method is negoti ated the modem hangs up 5 Only LAPM is possible as error correction method If no LAPM is negotiated the modem hangs up 6 Only MNP is possible as error correction method If no MNP is negotiated the modem hangs up 8 V 80 synchronous access mode exists answer The following two tables provide an overview of the interaction of the param eters orig rqst and orig fbk of the AT ES command The modem is set to AT ES 3 0 by default In the upper table this configura tion is described as case 6 Column 6 of the lower table shows the error cor rection methods possible for this setting connection with V 42 MNP4 or without protocol The arrows pointing down in the lower table denote a fallback if the respec tive mode is not supported by the remote modem devolo MicroLink 56ki EU AT commands Detailed description ETBM Sending buffer Receiving buffer Tables for the representation of the error correction method orig rqst orig fbk 1 2 3 4 6 0 4 5 6 7 0 2 4 1 8 0 3 4 1 2 0 4 4 3 0 V 80 I fev ue quee le V 42 elle Je de al v 42 ec ce es MNP Eu E Buffered a L a without detect phase b with detect phase e Buffer handling after connection abort AT ETBM lt send
70. s disabled Escape code characters Valid values 0 to 255 decimal Default value 43 otore in non volatile memory AT W The escape command that is used to switch from the transfer phase to the command phase can be changed in register 52 The transition to the command phase is blocked by values 0 and 128 Carriage return characters Valid values 0 to 127 decimal Default value 13 carriage return otore in non volatile memory AT W The character for Return can be redefined in register S3 Line feed character Valid values 0 to 127 decimal Default value 10 line feed Store in non volatile memory AT W The line feed character can be redefined in register 54 devolo MicroLink 56ki EIN Description of registers S5 S6 57 Backspace character Valid values Default value otore in non volatile memory 0 to 32 127 decimal 8 backspace AT W The backspace character can be redefined in register S5 Wait before blind dialing Valid values Default value Store in non volatile memory 3 6 seconds 3 seconds AT W The time to elapse before the modem performs blind dialing see also ATX ATX1 or ATX3 page 42 can be set in register S6 Watt for carrier Valid parameters for Germany Default value for Germany Valid parameters for Austria Default value for Austria Valid parameters for Switzerland Default value for Switzerland Store in non volatile memory 10 1
71. s used according to V 250 V 253 Flash ROM technology With the help of flash ROM technology firmware updates can be implemented quickly and easily Warranty three years warranty for the MicroLink 56k Protected The MicroLink 56k i satisfies the CE requirements devolo MicroLink 56k i Control commands 2 2 1 2 1 1 Control commands The AT command set AT command prefix for Attention was not standard Ized until recently The implementation was left to the discretion of the indi vidual manufacturers A standard now exists in the V 250 V 253 command set With your MicroLink 56k i you have purchased a state of the art modem equipped with the AT command set in accordance with V 250 V 253 A terminal program is required to enter AT commands via a PC Entering and executing AT commands After switching on the modem is in the command phase Commands can only be accepted interpreted and executed in this phase In the event that several commands are to be sent to the modem these may be entered individually each with an AT command prefix and a concluding Enter It is also possible however to enter these commands consecutively in a single command line after an introductory AT and to conclude the line with an Enter The individual commands may be separated by spaces to improve the over view No further characters may be entered once the end of the command line buffer has been reached T
72. s used to query all current settings of the modem The output is sorted according to command groups You can set the number of lines to be output via the monitor The following settings are valid Parameter Value Description Command group A G M E l Display of the command group in question D F V V J ALL Display of the entire command set Number of lines 1 40 Set number of lines to be output 0 Output of all lines of the command group If you enter the following command the modem output will look like this at cs 49 3 devolo MicroLink 56k i AT commands Detailed description GCI 04 GMI ELSA AG Aachen Germany GMM MicroLink 56k i Continue by clicking on desired key GMR 50000000 GSN XXXXXXXXX OK D Establishing a connection ATDn Upon an ATD command the modem attempts to establish a connection and dials the telephone number n can consist of the digits 0 9 and in the case of tone dialing may also contain the characters A D and The max imum allowed length of the entire dial string is 36 characters The connection establishment can be aborted at any time during dialing by entering any character except for Line Feed XON and XOFF In addition entry of ATD without parameters allows an existing telephone connection voice to be taken over by the modem data This requires that modem and tele phone are connected to the same line The following special charact
73. s which are possibly stored with AT W 5 registers can be stored with W S0 S2 53 S4 95 S6 S7 S8 S10 511 512 514 523 525 527 526 520 S30 S31 S34 35 522 543 547 553 564 S66 S93 596 599 5 registers can be stored with amp W 50 514 523 525 S27 528 530 531 564 593 596 599 Save complete configuration profile AT WO Save extended configuration profile 0 AT W1 Save extended configuration profile 1 This command can be used to store the values of the following register in the non volatile memory of the modem in addition to the parameters and regis ters stored with AT amp W The values are retained when the modem is switched off and are automatically recalled the next time the modem is turned on devolo MicroLink 56ki EUG AT commands Detailed description X X amp Y Handling of dial tone busy tone 0 Ignore dial tone ignore busy tone 1 Ignore dial tone busy tone ATX2 Wait for dial tone ignore busy tone ATX3 Ignore dial tone evaluate busy tone ATX4 Wait for dial tone evaluate busy tone This command is used to determine the dialing behavior With ATX2 or respectively the modem waits for the dial tone before dialing With ATX0 ATX1 or the modem does not wait for the dial tone thus allow ing blind dialing for call establishment between two extensions Furthermore you can use this command to determine whether your modem recogn
74. sed only the RI interface line indicates an incoming call Indial Outgoing calls are allowed Outdial The password list may be displayed and changed Password Locked commands are answered with ERROR Query of current access flags 5 The AT S command can be used to check the current setting of the access flags After entering the command a list of the currently set flags is displayed on the screen at s CONFIG devolo MicroLink 56ki EJ AT commands Detailed description T amp T Tone dialing method ATT This command selects the touch tone dialing multi frequency dialing DTMF signaling method Select digital loopback AT amp TO Normal operation AT amp T1 Enable local digital loopback AT amp T3 Enable remote digital loopback AT amp T4 Remote digital loopback accepted AT amp T5 Remote digital loopback blocked AT amp T6 Enable remote digital loopback This command sets several testing loopbacks and can be used as a function test All digital loopbacks with the exception of the local digital loopback can be enabled only during an existing connection without error proofing AT ES 1 0 or AT ES 1 The testing modes can be terminated by changing to the command state and entering AT amp TO AT amp T1 enables the local digital loopback Each character sent from the host to the modem is echoed The AT amp T1 command can only be executed offline The command is answered
75. ster 534 page 70 fol lowed by a valid command line the modem enters the configuration mode This allows the modem to temporarily leave the online transmission without aborting the connection The configuration command is only recognized in the online transmission command state A valid command line must start with AT or at and ended with an Enter The user at the remote modem is prompted to identify himself by entering his user password If his entries are correct the message password OK is dis played and the remote configuration is active If the remote configuration is used in combination with the automatic call back function with password protection the password is requested directly after the connection establishment and therefore the remote configuration becomes active immediately after the valid configuration command MicroLink 56k i password password OK REMOTE CONFIGURATION ON devolo MicroLink 56ki AT commands Detailed description 7 amp G OK gt The prompt gt indicates that you are in configuration mode Locked com mands are answered with ERROR Load default configuration AT amp F This is used to load the firmware s default parameter settings Exception 554 564 586 587 588 589 599 5130 and 5229 are not changed This command is not executed during existing connections Set calling tone and guard tone AT amp GO Calling tone on no guard tone AT amp G1
76. switch the inactivity time off Trace mode ATSTO Trace mode OFF ATSTI Trace mode ON The AT T command enables or disables the trace mode The trace mode can be used to monitor unsuccessful access attempts The AT TO command disables the trace mode and feedback messages are not displayed AT T1 command enables the trace mode and all feedback messages will be preceded by R Trace messages cannot be displayed in abbreviated form The current setting of the AT B and AT T commands can be displayed with the ATI4 command devolo MicroLink 56ki EJ AT commands Detailed description password PHONE NUMBER password OK CALLBACK IN n MIN NO CARRIER The following illustration shows the methods 1 AT B1 and 2 AT B2 with enabled trace mode 9 1 TIME several minutes 843 Connection PH Variant 1 RING CONNECT TRACE KON zx ff Rind 1 is ignored here Variant 2 xaff lt gt RING CONNECT SKONF Ring 3 If method 1 is used the modem first displays the password and phone number of the remote modem after a RING Then the messages RNO CAR RIER and RCONNECT at the time of xon appear as trace text as well as the entries of the remote modem user password and phone number If method 2 is used the trace messages appear before the RING and CON After a RRING and RCONNECT first the password and phone number of the remote modem are
77. ter of the ASCII character set It can be redefined in register 52 All commands sent to the modem must begin with the ASCII characters AT or at not valid At or aT and must be concluded with Enter A valid com mand line in an escape sequence is restricted to a maximum of 40 characters The command AT amp F loads the firmware default parameter settings This command is not executed during existing connections Bit oriented registers Bit oriented registers are primarily used to provide status information Please note that the modification of a single value in the bit oriented register may have several functions Great caution should thus be applied when changing bit oriented registers To change the configuration of your modem you should use the AT commands instead A complete description of the S registers can be found in the chapter AT commands Detailed description Modifying bit oriented registers The following example will illustrate the modification of the bit oriented options of a register To set the bit 6 of register 514 enter the command ATS14 6 1 If you would like this value to be maintained after the modem is switched off the new entry can be stored with the command AT W Overview of AT command set and registers In this brief overview which is grouped according to topics you find fre quently needed AT commands and registers you can use to change your devolo MicroLink 56k i Control commands 1 2 3 1
78. tion compression has been negotiated max_dic 2048 Maximum number of dictionary entries max_string 32 Maximum string length for V 42bis data com pression FCS mode of operation in the V 42 mode AT EFCS lt parameter value This command is used to control the application of the 16 bit frame check sequence FCS in the V 42 mode The following settings are valid Description 16 bit FCS Parameter Value Parameter value 0 Display ofthe error correction method AT ER lt parameter value gt devolo MicroLink 56ki EG AT commands Detailed description ES ans_fbk This command is used to switch the output of the negotiated error correction method on The output takes place prior to the connect message The follow ing settings are valid Parameter Value Description Parameter value 0 Disable modem result codes 1 Enable modem result codes The following messages can occur ER None No error correction method ER LAPM Error correction method according to LAPM selected ER ALT Error correction method according to MNP4 selected Selection of the error correction method AT ES lt orig_rqst gt lt orig_fbk gt lt ans_fbk gt This command is used to select the error correction method the modem offers to the remote station during the negotiation of the data protocol orig rqst States the data protocol the calling modem originate attempts to negotiate at first If the remote station does not
79. ty covers the equipment delivered and all its parts Parts will at devolo s sole discretion be replaced or repaired free of charge if despite proven proper handling and ad herence to the operating instructions these parts became defective due to fabrication and or material defects Alternatively devolo reserves the right to replace the defective product with a comparable product with the same specifications and features Operating manuals and possibly supplied software are excluded from the warranty Material and service charges shall be covered by devolo but not shipping and handling costs involved in transport from the buyer to the service station and or to devolo Replaced parts become property of devolos devolo is authorized to carry out technical changes e g firmware updates beyond repair and replacement of defective parts in order to bring the equipment up to the current tech nical state This does not result in any additional charge for the customer A legal claim to this service does not exist Warranty period The warranty period for this devolo product is three years This period begins at the day of deliv ery from the devolo dealer Warranty services carried out by devolo do not result in an extension of the warranty period nor do they initiate a new warranty period The warranty period for in stalled replacement parts ends with the warranty period of the device as a whole 3 a b c d 4 Warranty procedure
80. ustment DSR Is only active in the time between when the answer tone stops and dis connection Verbose display of the current configuration ATNS Display current configuration The ATNS command displays the current configuration profile of the modem in verbose form Set access flags AT S The AT S command is used to set the access flags to define which modem functions can be used After entering the command and the correct password the current setting of the access flags CONFIG is displayed After entering the new setting in the SET line the new configuration CONFIG is displayed Flags that have not been set are displayed as Changes of the access flags always apply to the entire modem not only to one of the configuration profiles and are saved in the non volatile memory at s password devolo MicroLink 56k i AT commands Detailed description EJ Example CONFIG 10 SET AIO CONFIG 10 OK Access flags can only be changed by authorized users who enter the correct supervisor password Any combination of the following access flags can be used Value Description A All commands that do not change the non volatile memory may be used All W The commands AT P AT amp W AT W AT amp Y and AT ASTO may be used Write If has not been set the modem is in the call protection mode Calls cannot be answered with ATA nor with ATSO 1 The RING message is suppres
81. value of bit n Register values can be changed using this command The value for bit n defined in the corresponding register can be set to the value m If access is not permitted the value of the S register remains unchanged and the modem answers with ERROR To set the bit 6 of register 514 enter the command ATS14 6 1 Extended command set AT command set The AT4 commands of the extended command set can be used to control selected modem functions in accordance with the V 250 V 253 standard The current parameter settings can be queried with AT lt Command gt e g The valid range of parameter values is output through AT lt Com mand gt e g AT IFC Commands for which no range of values can be output are answered with ERROR Control of the V 8 and V 8bis negotiation AT A8E lt V80riginatorKonf gt lt V8AnswererKonf gt lt V8CallFunction gt lt V8bis gt lt CallfunctionRange gt lt ProtocolFunctionRange gt devolo MicroLink 56k i AT commands Detailed description EZ ASTO This command is used to control the V 8 and V 8bis negotiation The following settings are valid Parameter Value Description V8OriginatorKonf 0 V 8 negotiation as caller OFF 1 Modem controlled V 8 negotiation as caller ON 6 Like 1 with additional output of a A8X mes sage to the computer V8AnswererKonf 0 V 8 negotiation as remote station OFF 1 Modem controlled V 8 negotiation as caller ON 5 Like 1 with addition
82. your modem echoes entered commands on the local screen or not If the echo is switched on and all characters appear twice on your monitor your communications program is in half duplex mode and you should switch to full duplex mode Disable automatic retrain AT EO Automatic retrain off AT E1 Enable automatic retrain If the modem is set to AT EO no retrain is performed even if the line quality is poor With the default setting AT E1 the modem automatically tries to adapt itself to changes of the line quality devolo MicroLink 56k i AT commands Detailed description EJ E A Example If the automatic retrain is disabled with AT EDO a retrain can nevertheless be triggered manually by changing to the command state in an existing con nection and entering ATOT see page 30 Enable remote configuration AT E0 Remote configuration off AT E1 Remote configuration on The remote configuration allows you to configure your modem from any loca tion you are calling from and can be combined with the automatic callback function Up to 19 different user passwords can be stored with the AT P command see page 30 Remote configuration is switched off with the AT EO command and acti vated with the AT E1 command When a connection has been established the modem is in the online state as usual However once the configuration command is entered which consists of four characters default setting see also regi

MicroLinkTM 56k i

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