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73M2901CE AT Command User Guide

1. T ZS Og flg eis Ea 183 te oc gt 2 Ka OD Hs k x x E LH 3 Q o 20 O LL O gt lt i st C S99 1 0 33 44 39 49 81 61 34 S99 Wait for blind dial ihe 2 4 2 4 4 4 4 4 4 S6 Billing_delay 2 2 2 2 2 2 2 2 2 S74 DTMF_speed 0 070 0 080 0 085 0 085 0 085 0 085 0 085 0 085 0 150 S11 Pulse dlal make 0 039 0 033 0 033 0 033 0 040 0039 0 033 0 033 0 033 s32 Pulse ia break 9061 0 067 0 067 0 067 0 060 0 061 0 067 0 067 0 067 33 Pulse dial interdigit 9759 0 850 0 900 0 850 0 880 0850 0 850 0 850 0 900 S34 Pulse dial map 0 0 0 0 0 0 0 0 0 S72 TRES keg tone 280 680 240 580 370 500 240 580 370 500 240 580 240 580 240 580 240 580 88 Imprecise Dial tone det level 45 42 38 38 38 38 38 38 38 S75 Precise Dial tone detection level 45 45 40 45 40 45 45 45 40 S77 Dial tone type Imprecise Imprecise Imprecise Imprecise Imprecise Imprecise Imprecise Imprecise Imprecise S20 Dial tone 350Hz selected Sel Sel Sel Sel S19 Dial tone 440Hz selacted Sel Sel Sel Sel Sel S19 Dial tone 480Hz selected Sel Sel 19 Dial tone 620Hz selected Sel Sel S19 Dialtone qualification time 1 2 1 0 0 8 0 8 2 0 0 8 1 0 1 0 1 0 S67 Rall cas Dial Yes Yes Yes Yes No Yes Yes Yes Yes S29 i Cadence Double Cadence Cadence Double Cadence Cadence Cadence Cadence Cadenced Dial tone AorB Caden
2. 4 1 Setting S registers The mechanism for directly setting an S Register is the ATS n value command Where n is equal to the particular S Register and value is equal to the value that is to be written to the register The value may be in either decimal or hex Hexadecimal values must be preceded with a and must be two digits for example ATS14 A is not valid but ATS14 0A is 4 2 Reading S registers The mechanism for reading an S Register is the ATS or the ATS command ATS with result in a decimal value reported to the DTE and ATS will result in a hexadecimal value being reported to the DTE The user should be aware that many registers have bits that are used internally and are constantly changing in the idle state 4 3 Setting Reading S registers While in Online Command Mode While connected it is possible to enter online command mode and Set or Read some S registers This may not always produce the desired effect Some S register settings will not take effect until after the connection has been broken For example you would not be able to change modulation standards or go from synchronous to asynchronous mode while connected In addition values read from some S registers while in online command mode may not accurately reflect certain states 4 4 S registers Definitions 4 4 1 SO AutoAnswer Default 0 This register specifies the ring on which the modem will answer A value of 1 to 255 will place the modem
3. 4 4 71 S70 Auto Retrain Threshold Default 16 Forces auto retrain if threshold is below the mean square error 4 4 72 S71 Originate Mode Fallback Timer Default 6 0 The modem does not fall back to Bell103 or V 21 The modem will fall back after the number of seconds this register is set to for any number greater than 0 Range is 0 to 254 4 4 73 S72 Pulse Map Caller ID BlackList Default 0 Bit 1 Bit 0 Tone Dial Digit 0 1 2 3 4 5 6 7 8 9 0 0 Pulse 10 1 2 3 4 5 6 7 8 9 0 1 Pulse 10 9 8 7 6 5 4 3 2 1 1 0 Pulse 1 2 3 4 5 6 7 8 9 10 Bit2 Enable test pins This option allows the user to control port pins such as CTS RI etc Bit3 Enable option to generate Wetting Pulse by pulsing Hook signal for CID DH A Enable option to go Off Hook for CID used for Japan Bit5 CID preamble starts with Marks instead of Dots used for Japan or Type 2 Snoop mode Bit6 Reserved Used to Disable FSK CID mark space Twist compensation Bit7 Enable blacklist option 4 4 74 573 Configuration Register 1 Default 30h Bit 0 Enable teletel SEP codes in V 23 Bit 1 Low Power mode enabled Bit 2 Clear to Send Signal Control Bit 3 Reserved Used internally to indicate Fast running Main state Bit 4 Reserved Used internally to indicate Home state Bit 5 Enable 125ms delay between AT commands Bit 6 Adaptive dialing enable Bit 7 Reserved Re
4. Bit5 0 CD always ON equivalent to CO command Default 1 CD ON indicates the presence of CD equivalent to C1 command Bit 6 0 No RTS CTS DTE flow control equivalent to K3 Default 1 RTS CTS DTE flow control Bit 7 0 No SON XOFF DTE flow control equivalent to K4 Default 1 XON XOFF DTE flow control Rev 2 0 27 73M2901CE AT Command User Guide UG 2901GE 027 4 4 23 522 Bit Mapped Register Default 36h Register S22 reflects the status of certain options Register S22 is a bit mapped register whose bits are defined as follows Bit 2 Bit 1 Bit 0 Function Synchronous Asynchronous Control 0 0 0 YO Asynchronous Mode 0 0 1 Y1 Synchronous Mode 1 0 0 Y4 Quasi Synchronous Mode 1 1 0 Y6 Asynchronous with speed buffering Default Bit6 Bit5 Bit4 Bit3 Function Select Result Code Set 0 0 0 1 X0 Enable Result Codes 0 4 0 0 0 0 X1 Enable Result Codes 0 5 10 0 0 1 0 X2 Enable Result Codes 0 6 10 0 1 0 0 X3 Enable Result Codes 0 5 7 10 0 1 1 0 X4 Enable Result Codes 0 7 10 Default 1 0 0 0 X5 Enable Result Codes 0 5 10 and detect BUSY at OFF HOOK 1 0 1 0 X6 Enable Result Codes 0 6 10 and detect BUSY at OFF HOOK 1 1 0 0 X7 Enable Result Codes 0 5 7 10 and detect BUSY at OFF HOOK 1 1 1 0 XB Enable Result Codes 0 7 10 and detect BUSY at OFF HOOK Result Code 0 OK Result Code 1 CONNECT Result
5. lt 7 SEMICONDUCTOR CORP Simplifying System Integration 73M2901CE AT Command User Guide November 12 2008 Rev 2 0 UG 12901CE 027 73M2901CE AT Command User Guide UG 2901CE 027 O 2008 Teridian Semiconductor Corporation All rights reserved Teridian Semiconductor Corporation is a registered trademark of Teridian Semiconductor Corporation All other trademarks are the property of their respective owners Teridian Semiconductor Corporation makes no warranty for the use of its products other than expressly contained in the Company s warranty detailed in the Teridian Semiconductor Corporation standard Terms and Conditions The company assumes no responsibility for any errors which may appear in this document reserves the right to change devices or specifications detailed herein at any time without notice and does not make any commitment to update the information contained herein Accordingly the reader is cautioned to verify that this document is current by comparing it to the latest version on http www teridian com or by checking with your sales representative 2 Rev 2 0 UG 2901CE 027 73M2901CE AT Command User Guide Table of Contents 1 Introduction Age ee dreie dre hee 7 2 AT COMMANA E 8 21 A ANSWOL nassi Renee eee AAE E AANS 8 22 A Repeat Last Command a a a aaa AE ea anit ete ee a aeea then eed 8 2 3 B Bell ITU V 23 or Bell202 Operation 8 2 4 C n Select Carrier Detect Option 8 2 5 S n 1 Dialing
6. Hex Value Mode 0 1 01 4 Wire mode T 1 2 02 Bell 202 2 4 04 V 22 bis default 3 8 08 V 22 default 4 16 10 Bell 212 5 32 20 Bell 103 default 6 64 40 V 21 default 7 128 80 V 23 The settings in this register determine the handshake method s to be attempted bits 1 7 Precedence from highest to lowest V 22bis V 22 Bell 212 Bell 103 V 21 V 23 Bell 202 Rev 2 0 31 73M2901CE AT Command User Guide UG_2901CE_027 4 4 32 31 Bit Mapped Connect Detect Register Default 00h The value in this register indicates the DCE speed of the last established connection This is a read only register The default value is 0 until connection is established Bit Decimal Value Hex Value Mode 0 1 01 Successful 4 Wire Connection T 1 2 02 Successful Bell 202 Connection 2 4 04 Successful V 22 bis Connection 3 8 08 Successful V 22 Connection 4 16 10 Successful Bell 212 Connection 5 32 20 Successful Bell 103 Connection 6 64 40 Successful V 21 Connection 7 128 80 Successful V 23 Connection Note All bits are zero until a successful connection has been established carrier detect valid data mode active Then the appropriate bit will be set 4 4 33 532 Pulse Dial Make Timer Default 39 Duration of Pulse Make time in ms Range is 1 to 211 4 4 34 533 Pulse Dial Break Timer Default 61 Duration of Pulse B
7. 73M2901CE AT Command User Guide UG 2901CE 027 2 21 V n Select Result Codes Numbers Words n 0 1 2 factory default 1 The V n command instructs the modem to report either verbal whole words or numerical result codes Also refer to the Q n and X n commands VO Vi V2 2 22 Result codes reported as digits numerals Result codes reported as whole words Result codes reported as digits numerals preceded and followed by lt CR gt lt LF gt Win Select Extended Result Code n 0 1 2 factory default 0 The W n command determines which result codes will be used to describe the type of connection that was negotiated by the handshake WO Wi W2 Do not return extended result codes 40 80 The message CONNECTS followed by the data rate between the DTE and the modem will be sent to the DTE The CONNECT message will report the DTE speed then enable the carrier and extended result codes The CONNECT message will report the DCE speed All extended result codes are disabled Extended Result Codes Result Code 40 CARRIER 300 Result Code 41 CARRIER 600 Result Code 46 CARRIER 1200 Result Code 47 CARRIER 2400 Result Code 44 CARRIER 1200 75 Result Code 45 CARRIER 75 1200 Result Code 70 PROTOCOL NONE Result Code 77 PROTOCOL LAP M Result Code 80 PROTOCOL ALT Pre Dial Post Dial wo W1 W2 wo Wi W2 XO 0 2 4 0 2 4 14 0 2 4 1
8. Higher value may indicate open circuit in either TXAP or TXAN signals to RXA Rev 2 0 49 73M2901CE AT Command User Guide UG 2901CE 027 4 4 113 116 Parallel Pick Up Energy Detection Threshold Default 50h Sets the Threshold for PPU to detect loss of Energy compared to the energy level at the time of connection Use 48h 50h 5Ah for 1 2 3dB loss of Energy when parallel phone is picked up 4 4 114 S117 No Activity Timeout Default 0 Sets the duration for the no activity timeout option Resolution is in seconds Range is 0 255 When set to zero the no activity timeout option is disabled When enabled values of S117 gt to 15 are recommended 4 4 115 118 Caller ID Ring Interrupt Delay Default 20 Disables ring interrupt detection for the specified period of time during CID enable disable transitions measured in ms 4 4 116 S119 Wait Before Connect Default FFh Allows programmable delay between completion of handshake and connect ready for data User should be careful Host will have to complete delay period before transmitting data Setting the value at this register will affect timing for all modes Resolution is in 10ms increments The Default delay times are as follows QAM Answer Mode 200ms PSK Answer Mode 770ms PSK Originate Mode 770ms FSK Originate Mode 300ms NOTE Special mode when S119 FF Default uses same value of wait as in the past 4 4 117 S120
9. 0 sets continuous CID mode where S95 bits 0 1 2 and 3 are ignored Also enables using USER 11 output to signal DAA to enter idle line signaling state for LIU E detection Special modes 595 0X01 0000B FSK Continuous Caller ID mode 595 0X110000B Send detected DTMF codes to DTE without CID message 95 10011001B Detect US Type 1 and Type2 Snoop CID simultaneously In this mode the modem may automatically modify S72 register bit 5 to look for Dots Type1 or marks Type 2 Snoop 4 4 97 599 Country Codes Register Default 1 S99 allows the 73M2901CE to be set up for different countries by using a single command By changing the configuration of S99 the dial tone busy tone detection as well as DTMF and pulse timings are modified No other commands are needed to program the country requirements of the countries supported by register S99 Since the S99 register affects multiple registers it should be set at the beginning of the AT String but after the F command l e ATFS99 1 0 CTR 21 Euro community 1 U S A Canada Default 1 33 France 34 Spain 39 Italy 44 U K 49 Germany 61 Australia 81 Japan 44 Rev 2 0 UG 2901CE 027 73M2901CE AT Command User Guide Table 1 S99 Country Code S Register Settings Country implemented all timing is in seconds and levels in dBm
10. 027 73M2901CE AT Command User Guide Table 2 Worldwide Termination Impedance Requirements Country AC Country AC Country AC Impedance Argentina 600 Hong Kong 600 Oman 600 Australia Australia Hungary 600 Pakistan 600 Austria Australia Iceland CTR 21 Peru 600 Bahrain CTR 21 India Australia Philippines 600 Belgium CTR 21 Indonesia 600 Poland 600 Brazil 600 Ireland CTR 21 Portugal CTR 21 Bulgaria Australia Israel CTR 21 Romania 600 Canada 600 Italy CTR 21 Russia 600 Chile 600 Japan 600 Saudi 600 China 600 Jordan 600 Singapore 600 Columbia 600 Kazakhstan 600 Slovakia Australia Croatia CTR 21 Kuwait 600 Slovenia CTR 21 CTR TBR CTR 21 Latvia CTR 21 S Africa CTR 21 Cyprus CTR 21 Lebanon CTR 21 S Korea 600 Czech CTR 21 Luxembourg CTR 21 Spain CTR 21 Denmark CTR 21 Macao 600 Sweden CTR 21 Ecuador 600 Malaysia 600 Switzerland CTR 21 Egypt 600 Malta CTR 21 Syria 600 EI 600 Mexico 600 Taiwan 600 Finland CTR 21 Morocco CTR 21 Thailand 600 France CTR 21 Netherlands CTR 21 UAE 600 Germany Australia New Australia UK CTR 21 Greece CTR 21 Nigeria CTR 21 USA 600 Guam 600 Norway CTR 21 Yemen 600 4 4 98 S100 Idir Default 158 External Interrupt direction Register 4 4 99 101 USR1x I O Default 195 USR1x I O Port status and control When read outputs the current status of USR1 port When defined as an output a user port pin will assume the
11. 48 4 4 105 S107 Delay between nf and n 1 attempt c ccccccescecsssessessssessessesecseseseseresseaneess 48 4 4 106 S108 Maximum successive Failed attempts sse eee ee eee 48 4 4 107 S109 Delay between Series Re enable dea 48 4 4 108 S110 Line In Use Configuration Hegtsier sese ee eee 48 4 4 109 S111 Line In Use Settle Time 49 4 4 110 S112 Line In Use Energy Detection Want 49 4 4 111 S113 Line In Use Energy Detection Thresbold sss 49 4 4 112 S114 Hi 5115 Lo Maximum Carrier Detect Threshold UU 49 4 4 113 S116 Parallel Pick Up Energy Detection Threshbold sese eee eee ee 50 4 4 114 S117 No Activity Timeout sss sees eee eee eee eee 50 4 4 115 5118 Caller ID Ring Interrupt Delai 50 4 4 116 S119 Wait Before Connect 50 4 4 117 S120 Accepted Answer Tone Frequencies sese eee eee eee 50 4 4 118 5121 Answer Tone Qualify Time 51 4 4 119 5122 Parallel Pick Up Debounce Timer sese sese ee eee 51 4 4 120 S123 Soft Ring Detect AE 51 4 4 121 S8124 V23 Half Duplex Enable sees eee 51 5 Related Documentation rrnnnnvnnnnnnnvnnnnnnnvnnnnnnnvnnnnnnnvnnnnnnnnvnnnnnnnnnnnnnnnnnnnnnnnnnnennnnnnnnnnnnnnnnnnnnnnnnennnnnneenn 51 6 Contact Information ssis ereenn aeanoea EES EENEG 51 Revision HISTORY Ar EEA E fies aa Ree 52 Rev 2 0 5 73M2901CE AT Command User Guide UG 2901GE 027 Tables Table 1 S99 Country Code S Register Settings eee ee eee eee 45 Table 2 Worldwide Termi
12. 9 14 0 1 3 5 7 6 7 plus extended 14 9 14 22 23 22 23 plus 9 14 22 23 14 result codes extended result codes 2 23 X n Select Result Code Set n 0 to 8 factory default 4 The X n command selects normal or extended result code reporting and enables or disables advanced functions XO X1 X2 X3 X4 X5 X6 X7 X8 Enable Result Codes 0 4 14 Enable Result Codes 0 5 10 14 Enable Result Codes 0 6 10 14 Enable Result Codes 0 5 7 10 14 Enable Result Codes 0 7 10 14 default Enable Result Codes 0 5 10 14 and detect BUSY at OFF HOOK Enable Result Codes 0 6 10 14 and detect BUSY at OFF HOOK Enable Result Codes 0 5 7 10 14 and detect BUSY at OFF HOOK Enable Result Codes 0 7 10 14 and detect BUSY at OFF HOOK Result Code 0 OK Result Code 1 CONNECT Result Code 2 RING Result Code 3 NO CARRIER Result Code 4 ERROR Rev 2 0 17 73M2901CE AT Command User Guide UG 2901CE 027 Result Code 5 CONNECT 1200 Result Code 6 NO DIALTONE Result Code 7 BUSY Result Code 8 NO ANSWER if dial modifier is used and quiet answer is not detected within S7 Result Code 9 CONNECT 0600 Result Code 10 CONNECT 2400 Result Code 11 CONNECT 4800 Result Code 12 CONNECT 9600 Result Code 13 CONNECT 7200 Result Code 14 LINE IN USE Result Code 22 CONNECT 75 1200 Result Code 23 CONNECT 1200 75 If XO X1 X3 X5 or
13. Cadence Cadence Cadence Cadence Cadence Cadence Cadence 529 tone AorB AorB AorB AorB AorB AorB AorB AorB AorB min on busy 0 400 0 400 0 400 0 240 0 400 0 360 0 400 0 280 0 160 S43 max_on_A_busy 0 600 0 600 0 600 0 520 0 600 0 600 0 600 0 440 0 320 S44 min_off_A_busy 0 400 0 400 0 400 0 240 0 400 0 360 0 400 0 280 0 160 S45 max_off_A_busy 0 600 0 600 0 600 0 520 0 600 0 600 0 600 0 440 0 320 S46 min_on_B_busy 0 000 0 000 0 000 0 000 0 000 0 080 0 000 0 000 0 000 S47 max_on_B_busy 0 000 0 000 0 000 0 000 0 000 0 240 0 000 0 000 0 000 S48 min_off_B_busy 0 000 0 000 0 000 0 000 0 000 0 360 0 000 0 000 0 000 S49 max_off_B_busy 0 000 0 000 0 000 0 000 0 000 0 600 0 000 0 000 0 000 S50 ring_min_Hz 10 10 10 10 10 10 10 10 10 S17 ring_max_Hz 75 75 75 75 75 75 75 75 75 S18 ane eae me nae ae ee e ane e min_on_A_ring 1 600 0 800 1 200 0 320 0 800 0 720 0 800 0 320 1 200 S51 max_on_A ring 2 400 1 200 1 800 0 480 1 200 1 200 1 200 0 480 1 800 52 min_off_A_ring 3 200 3 200 3 000 0 120 3 200 3 200 1 600 0 080 2 400 S53 max_off_A_ring 4 800 6 000 4 000 0 280 5 000 6 000 2 400 0 280 3 600 S54 min on B ring 0 000 0 000 0 000 0 320 0 000 0 000 0 000 0 320 0 000 S55 max_on_B_ring 0 000 0 000 0 000 0 480 0 000 0 000 0 000 0 480 0 000 S56 min_off_B_ring 0 000 0 000 0 000 1 600 0 000 0 000 0 000 1 600 0 000 S57 max_off_B_ring 0 000 0 000 0 000 2 400 0 000 0 000 0 000 2 400 0 000 S58 46 Rev 2 0 UG 2901CE
14. Code 2 RING Result Code 3 NO CARRIER Result Code 4 ERROR Result Code 5 CONNECT 1200 Result Code 6 NO DIALTONE Result Code 7 BUSY Result Code 8 NO ANSWER if dial modifier is used and quiet answer is not detected within S7 Result Code 9 CONNECT 0600 Result Code 10 CONNECT 2400 Result Code 11 CONNECT 4800 Result Code 12 CONNECT 9600 Result Code 13 CONNECT 7200 Result Code 14 LINE IN USE Result Code 22 CONNECT 75 1200 Result Code 23 CONNECT 1200 75 bit7 0 Pulse dialing make break ratio 39 61 U S Default 1 Pulse dialing make break ratio 33 67 U K Hong Kong This bit has an effect only when S32 or S33 are set to zero 4 4 24 23 Busy Detect Cadence Count Default 3 Defines how many busy cadence cycles before sending the busy result code 28 Rev 2 0 UG 2901GE 027 73M2901CE AT Command User Guide 4 4 25 524 Desired DCE Speed Default 0 0 Last AT Command Speed 3 300 bits s 5 1200 bits s 6 2400 bits s Note This command only pertains to the DCE speed and not to Bell or ITU operation To establish ITU or Bell connections use S24 combined with the B command or set S26 bit 7 to obtain the desired modem operation 4 4 26 25 Protocol Selection Register Default 0 Register S25 reflects the status of certain options Default Value is 0 Register S25 is a bit mapped register whose bits are defined as follows Bit 0 1 Disconnect if No Pro
15. Force soft ring detection with frequency qualification for non phonex operation Recommend value of 7 or 2 for very Low Amplitude and Frequency detection 123 128 254Force soft ring detection with no frequency qualification for phonex operation Recommend value of 170 4 4 121 124 V23 Half Duplex Enable Default 0 BitO Selects V 23 1200 bps Half Duplex mode Bit 1 7 Reserved 5 Related Documentation The following 73M2901CE documents are available from Teridian Semiconductor Corporation 73M2901CE Data Sheet 73M2901CE Demo Board User Manual 6 Contact Information For more information about Teridian Semiconductor products or to check the availability of the 73M2901CE contact us at 6440 Oak Canyon Road Suite 100 Irvine CA 92618 5201 Telephone 714 508 8800 FAX 714 508 8878 Email modem support teridian com For a complete list of worldwide sales offices go to http www teridian com Rev 2 0 51 73M2901CE AT Command User Guide UG_2901CE_027 Revision History Revision Date Description 1 0 10 21 2004 First publication part of the 73M2901CE Demo Board User Manual 2 0 11 12 2008 Content now moved to its own document 52 Rev 2 0
16. String e a aa ieee a eaaa bhatt aa ahi ape hee ca 9 2 6 E n Echo Commands On 10 230 F Load Factory Detaults ungen ie iw tia tie el tiene 10 2 8 G Guard Tone Select naar aide tian tine ha eae 10 2 9 H n On Hook Off Hook Control 10 2 10 I n Identification and ROM Tests 11 21d TER EK EE 11 2512 K n Flow Control tances ea ei te Ma due at ee hia k en 12 C e D Bu gt EE Ile 12 2 14 N n Data Set Ready Signal Control 12 2 15 Ofn Return to On Line EE 14 2 t6 P Pulse DA Linnet ker teins arabe ge ntact tei hte ate aed a 14 2 17 Q n Result Codes On 14 2 18 R n Select Data Terminal Ready Option sse ee ee ee ee 14 2 19 S r Modify Read S registers sese 15 220 T Tone TE Te DEE 15 2 21 V n Select Result Codes NumbersiWorde sss see eee eee 16 2 22 W n Select Extended Result Code sese 16 2 23 X n Select Result Code Get 17 2 24 Y n Selects Asynchronous or Synchronous Mode 18 2 25 2 Reset Modem vu narre mdr age de dere ee ae and fraa hd 18 E EE 18 221 FA ET 18 3 Extended AT CommandS rrnnnavnnnnnnnnnvnnnnnvnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnennnnnnnnnnnnnnnennnnnnnnnnnnnnnnenn 19 3 1 A p Modify Read MAC RAM Memory Value sese eee eee eee eee 19 3 2 GB p Modify Read IRAM Memory Value cee eeeeaeeeeeeeeseaeeesaeeseaaeseeneeeeas 19 3 3 L n Set Lease Line Operation 19 3 4 P n Alternate Pulse Dial Make Break Raio sese 19 3 5 T n Sele
17. how long a carrier signal must exist before the modem issues a carrier detect response Range is 1 254 1 10 seconds Note Carrier detection while the modem is in the on line state is governed by the times specified by S9 and S10 The CD light is the carrier detect indicator If the carrier signal goes off CD goes off within 20ms If the carrier returns CD turns on within 20ms after the carrier has been on continuously for the time specified by S9 If CD is off for the time specified by S10 then carrier is lost and the modem hangs up If S10 is set to 255 the time is considered to be infinite meaning that the modem will not hang up 4 4 11 10 Lost Carrier To Hang Up Delay Default 14 The 10 register sets in 10ths of a second the delay time between loss of carrier and the modem hanging up After the S10 delay time the modem hangs up and returns to Command State Then you will see the NO CARRIER response If the register is set with a value of 255 the modem will ignore carrier detect status and operate as if the carrier signal were present If the value of S10 is less than the value of S9 a momentary loss of carrier will cause the modem to hang up Range is 0 255 1 10 seconds See note on S9 4 4 12 S11 DTMF Dialing Speed Default 70 The S11 register sets the duration and spacing of touch tones for tone dialing Setting this value lower than 50 may produce inaccurate dialing This register does not affect pulse dia
18. 1CE AT Command User Guide 4 4 14 Default 10h S13 DTMF Transmit Attenuation Gain Attenuation level can go from 4 0 dB to 10 0 or 11 0 dB from nominal DTMF CP Data D7 D6 D5 D4 D3 D2 D1 DO DTMF bit3 DTMF bit2 DTMF bit1 DTMF bito X CP D bit2 CP D bit1 CP D bm Note DTMF gain increments have to be a minimum of 1dB while for CP Data the minimum is 2dB gain increments Bits Bit2 Si Bito DTMF Gain CP Data Gain o0 o 1 0O 40B 0B GN NE NG NE EE 0 1 1 20dB 2 0 dB o EAA ee E ee Co o o o TT or EV a oes MEN 4 4 15 default AAh 1 4 f eos 200 0 sos 40 o sos 40 a 700 60 o sos ag 0 eos soe 1 0 f 1 tt 10 00 755 514 Bit Mapped Register 1 Register S14 reflects the status of certain options Register S14 is a bit mapped register whose bits are defined as follows BitO In Data Mode 0 Clear Channel for receiver 1 Receive Channel speed buffered In Call Progress Mode 0 Single cadence detection 1 Dual Cadence Detection Bit 1 0 No echo 1 Echo see the E n command Default Bit 2 1 Result codes disabled 0 Result codes enabled see Q n command Default Rev 2 0 25 73M2901CE AT Command User Guide UG 2901CE 027 Bit 3 0 Numeric result codes 1 Verbal result code
19. 4 0 1 3 4 0 1 3 4 14 0 1 3 4 14 14 14 X1 0 2 4 0 2 4 14 plus 0 2 4 14 0 1 3 5 9 0 1 3 5 9 14 0 1 3 5 9 14 extended result 14 22 23 22 23 plus 14 22 23 codes extended result codes X2 0 2 4 0 2 4 6 14 0 2 4 6 14 0 1 3 5 9 0 1 3 5 9 14 0 1 3 5 9 6 14 plus extended 14 22 23 22 23 plus 14 22 23 result codes extended result codes 16 Rev 2 0 UG 2901GE 027 73M2901CE AT Command User Guide X3 0 2 4 0 2 4 14 plus 0 2 4 14 0 1 3 5 7 0 1 3 5 7 9 14 0 1 3 5 7 14 extended result 9 14 22 23 22 23 plus 9 4 22 23 codes extended result codes X4 0 2 4 0 2 4 6 14 0 2 4 6 14 0 1 3 5 7 0 1 3 5 7 9 14 0 1 3 5 7 6 14 plus extended 9 14 22 23 22 23 plus 9 14 22 23 result codes extended result codes Pre Dial Post Dial XB 0 2 0 2 4 7 14 0 2 4 7 14 0 1 3 5 9 0 1 3 5 9 14 0 1 3 5 9 4 7 14 plus extended 14 22 23 22 23 plus 14 22 23 result codes extended result codes X6 0 2 4 0 2 4 6 7 14 0 2 4 6 7 0 1 3 5 9 0 1 3 5 9 14 0 1 3 5 9 6 7 plus extended 14 14 22 23 22 23 plus 14 22 23 14 result codes extended result codes X7 0 2 0 2 4 7 14 0 2 4 7 14 0 1 3 5 7 0 1 3 5 7 9 14 0 1 3 5 7 4 7 14 plus extended 9 14 22 23 22 23 plus 9 14 22 23 result codes extended result codes X8 0 2 4 0 2 4 6 7 14 0 2 4 6 7 0 1 3 5 7 0 1 3 5 7
20. 4 24 523 Busy Detect Cadence Coumt sss sseeeee eee 28 4 4 25 S24 Desired DCE Gpoeed A 29 4 4 26 S25 Protocol Selection Hegieter see 29 4 4 27 S26 Bit Mapped Data Mode Control Hegoieter sese 29 4 4 28 S27 Call Progress Transmit Heglsier eee eee 30 4 4 29 S28 Fast Connect and Calling Tone Enable sese eee eee 30 4 4 30 S29 Extended Result Selection Cadence Type Selection eee eee eee eee eee 31 4 4 31 530 Bit Mapped Handshake Register sese 31 4 4 32 531 Bit Mapped Connect Detect Register eee eee 32 4 4 33 532 Pulse Dial Make Timer sese eee eee 32 4 4 34 533 Pulse Dial Break Timer sees eee eee eee 32 4 4 35 534 Pulse Dial Inter digit mer 32 4 4 36 535 Cadence A Min On Time of Dial Tone sse 32 4 4 37 536 Cadence A Max On Time of Dial Tone 32 4 4 38 537 Cadence A Min Off Time of Dial Tone sse 32 4 4 39 538 Cadence A Max Off Time of Dial Tone 33 4 4 40 539 Cadence B Min On Time of Dial Tone sss 33 4 4 41 540 Cadence B Max On Time of Dial Tone sene 33 4 4 42 541 Cadence B Min Off Time of Dial Tone sse 33 4 4 43 542 Cadence B Max Off Time of Dial Tone 33 4 4 44 543 Cadence A Min On Time of Busy sse 33 4 4 45 544 Cadence A Max On Time of BUSY sese 33 4 4 46 S45 Cadence A Min Off Time of Busy sse 33 4 4 47 546 Cadence A Max Off Time of BUSY sese 34 4 4 48 547 Cadence B Min On Time of Busy sse 34 4 4 49 S48 Cadence B Max On Time
21. Accepted Answer Tone Frequencies Default 35 Enables control over what the modem will qualify as answer tone By default the modem functions as it has in the past Bit 0 1650Hz V21 Marks default Bit 1 1300Hz V23 Marks Bit2 2100Hz ITU Answer Tone default Bit 3 Reserved Bit 4 2225Hz Bell Answer Tone default Bit 5 2250Hz SO default Bit 6 Reserved Bit 7 Reserved 50 Rev 2 0 UG 2901CE 027 73M2901CE AT Command User Guide 4 4118 121 Answer Tone Qualify Time Default 0 The value of this register extends the answer tone qualification time beyond the 155ms minimum in 10ms units For example a value of 10 would yield a total answer tone qualification time of 255ms 100ms 155ms 4 4 119 122 Parallel Pick Up Debounce Timer Default 0 Sets the duration of the parallel pick debounce timer in 10ms increments 4 4 120 123 Soft Ring Detect Default 0 This register controls the ring amplitude threshold and selects hardware or software ring detection Bit Map Bits 0 6 Ring Amplitude Detection Threshold Lower value detects lower amplitude ring signal Bit 7 1 No frequency checking enables Phonex operation 0 Frequency and amplitude checking normal operation Special Values 123 0 Disable soft ring detect use hardware ring 123 255 Auto detect phonex mode the modem will automatically detect an user phonex system and configure itself accordingly 123 1 127
22. Data Set Ready Default 0 Bits 0 thru 1 N command value Bit 2 Enables Lease Line Operation Bit 3 Enables Off Hook Energy sensing Parallel pick up detection PPU E Bit 4 Toggles ring input polarity for PPU V Default is RING active low Bit 5 Toggles ring input polarity for LIU V Default is RING active low Bit 6 VFI fast connect originate handshake when specifying Bell 212 Will send FLAGS as part of the handshake when Y1 or Y4 is selected Bit 7 Reserved 42 Rev 2 0 UG 2901GE 027 73M2901CE AT Command User Guide 4 4 91 590 RTS to CTS Turn around Delay Default 2 When the NO command has been issued register S90 defines the time interval between an OFF to ON transition of RTS and when the modem turns CTS ON The S90 setting applies to Synchronous modes only Range is 1 to 254 X 10ms RTS CTS delay RTS CTS 4 4 92 591 Call Progress Transmit Level Default 90 S91 determines the maximum value sent to the DAC when sending call progress tones Range is 60 to 127 4 4 93 592 Bit Mapped Register Default 04h BitO 0 Bell202 V 23 receiver optimized for flat line 1 Bell202 V 23 receiver optimized for 3002A line unnecessary in versions 2901CL 01 36 and later Bit 1 0 Disables DTMF boost 1 Enables DTMF boost Sets VREF to 2 25V and TXboost when using 5V power supply Bit 2 0 lt Disables Pulse dial 1 Enables Pulse dial default Bit 3 0 No Imprecise Tones d
23. Dial T The modem tone dials the digits characters and symbols that follow S A semicolon causes the modem to go back into the Command State allowing you to enter other commands while on line To do this the must be the last character in the command line When inserted in a dialing string a comma causes the modem to pause The default time for the pause is two seconds and can be changed by modifying register S8 A commercial at causes the modem to wait up to 30 seconds for a 5 second period of quiet before proceeding This is often used to detect the end of a prerecorded message The default wait Rev 2 0 9 73M2901CE AT Command User Guide UG 2901CE 027 time is 30 seconds and can be changed by modifying register S7 Result Codes 7 and 8 will be reported regardless of which Result Code Set is selected An exclamation mark causes a hook flash This simulates hanging up for 1 2 second and then reconnecting It is typically used for transferring calls W Causes the modem to wait for a dial tone for a specified length of time before proceeding The default is 8 seconds and can be changed by modifying register S66 Result Code 6 will always be included regardless of which Result Code Set is selected J PTT Test See the J n command 2 6 E n Echo Commands On Off n 0Qor 1 factory default 1 Causes the modem to either echo characters or not to echo characters while in the Command State EQ Co
24. X7 modes are enabled the modem will delay a number of seconds determined by the value of register S6 not check for a dial tone and then dial The and W dial modifier result codes are not affected by the Xn command in effect The dial modifier enables result codes 8 NO ANSWER and 7 BUSY each time it occurs in the dial string The W dial modifier enables result codes 6 NO DIALTONE and 7 BUSY each time it occurs in the dial string 2 24 Y n Selects Asynchronous or Synchronous Modes n 0 to 6 default 6 YO Asynchronous mode No speed buffering no protocol Y1 Synchronous mode No speed buffering no protocol Y4 Quasi Synchronous mode Allows the transmission and reception of sync data through an asynchronous DTE by stripping off start and stop bits on transmission and adding them on reception Y6 Asynchronous with speed buffering Allows fixed DTE DCE speed so applications do not need to change the communications rate based on connection results Default Must be used with flow control K3 or K4 which is not ON by default 2 25 Z Reset Modem The Z command resets the modem The Z command is equivalent to a power cycle 2 26 During a data connection the escape command returns you to TIES Command State without terminating the data connection so you can enter AT commands When in TIES Command State all the AT commands given to the modem will be seen by the remote modem as data If a valid AT command is n
25. alues in Hexadecimal The S r1 command requests the modem to report the current value of r and successive registers The values are reported in hexadecimal notation The number of registers reported corresponds to the number of dollar signs given to the modem For an example S10 will report the values stored in the registers S10 S11 12 S r n Set S Register Value S r n Set S Register Value r O to 104 n 0 to 255 The S r n command allows you to set modify the value of any of register r to new value n The value n is entered in decimal notation S r n n n n Set S register Values The S r n nn n nn command allows you to set modify the value of any of r and successive registers to the new values n decimal notation or n hexadecimal notation For an example S10 F0 128 EC 25 will set register S10 FO hexadecimal S11 128 decimal S12 EC hexadecimal and S 13 15 decimal All hexadecimal values must be entered in as a two digit hex value For example enter 0A instead of A S r n Set Bits in S registers The S r n command sets bits in r S register by ORing the n value and the value currently in the S Register S r n Clear Bits in S registers The S r n command clears bits in r S register by ANDing the not n value and the value currently in the S Register 2 20 T Tone Dialing Causes the modem to tone dial until pulse dialing is selected Rev 2 0 15
26. ation Bits 6 4 are reserved Bits 3 0 indicate the tone pair detected Works with command J6 and bit 7 has to be set in order to be valid The following tables define DTMF decoding Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Det Valid Reserved Reserved Reserved DTDET3 DTDET2 DTDET1 DTDETO DTMF Detect bits Dialed Tone Pair Detected Det Valid DTDET 3 DTDET 2 DTDET 1 DTDETO Digit Low Tone HighTone Hz Hz 1 0 0 0 0 D 941 1633 1 0 0 0 1 1 697 1209 1 0 0 1 0 2 697 1336 1 0 0 1 1 3 697 1477 1 0 1 0 0 4 770 1209 1 0 1 0 1 5 770 1336 1 0 1 1 0 6 770 1477 1 0 1 1 1 7 852 1209 1 1 0 0 0 8 852 1336 1 1 0 0 1 9 852 1477 1 1 0 1 0 0 941 1336 1 1 0 1 1 Z 941 1209 1 1 1 0 0 941 1477 1 1 1 0 1 A 697 1633 1 1 1 1 0 B 770 1633 1 1 1 1 1 C 892 1633 4 4 67 S66 Wait for Dialtone Default 8 Sets the maximum number of seconds the modem waits for dial tone Range is 1 254 seconds 4 4 68 Default 120 567 Qualify Dialtone Sets the minimum duration for dial tone Range is 1 254 1 100 sec 4 4 69 Default 0 S68 Test Timer Times how long the self tests should run in seconds Range is 0 to 254 38 Rev 2 0 UG 2901GE 027 73M2901CE AT Command User Guide 4 4 70 S69 Test Error Count Default 0 Keeps count of how many errors occur during the self test
27. cadence minimum dial tone OFF time in units of 40ms 4 4 43 542 Cadence B Max Off Time of Dial Tone Default 0 The value of this register sets the duration of the alternate cadence maximum dial tone OFF time in units of 40ms 4 4 44 543 Cadence Min On Time of Busy Default 10 The value of this register sets the duration of the primary cadence minimum busy signal ON time in units of 40ms 4 4 45 544 Cadence A Max On Time of Busy Default 15 The value of this register sets the duration of the primary cadence maximum busy signal ON time in units of 40ms 4 4 46 545 Cadence Min Off Time of Busy Default 10 The value of this register sets the duration of the primary cadence minimum busy signal OFF time in units of 40ms Rev 2 0 33 73M2901CE AT Command User Guide UG 2901GE 027 4 4 47 S46 Cadence A Max Off Time of Busy Default 15 The value of this register sets the duration of the primary cadence maximum busy signal OFF time in units of 40ms 4 4 48 547 Cadence B Min On Time of Busy Default 0 The value of this register sets the duration of the alternate cadence minimum busy signal ON time in units of 40ms 4 4 49 548 Cadence B Max On Time of Busy Default 0 The value of this register sets the duration of the alternate cadence maximum busy signal ON time in units of 40ms 4 4 50 549 Cadence B Min Off Time of Busy Default 0 The value of this reg
28. ce AorB AorB Cadence AorB AorB AorB AorB S29 min_on_A_dt 0 000 0 160 0 000 0 000 0 160 0 000 0 000 0 000 0 800 35 Max_on_A_dt 0 000 0 240 0 000 0 000 0 240 0 000 0 000 0 000 1 200 S36 min_off_A_dt 0 000 0 160 0 000 0 000 0 160 0 000 0 000 0 000 0 080 S37 Max_off_A_ dt 0 000 0 240 0 000 0 000 0 240 0 000 0 000 0 000 0 120 S38 min_on_B_dt 0 000 0 480 0 000 0 000 0 480 0 000 0 000 0 000 0 240 S39 max_on_B dt 0 000 0 720 0 000 0 000 0 720 0 000 0 000 0 000 0 400 S40 min off B dt 0 000 0 800 0 000 0 000 0 800 0 000 0 000 0 000 0 000 S41 Rev 2 0 45 73M2901CE AT Command User Guide UG 2901GE 027 T ZS v o Eg I Eg Z 183 os E S s S 3 2 5 S 123 20 O LL gt O gt lt n st C max off B dt 0 000 1 200 0 000 0 000 1 200 0 000 0 000 0 000 0 040 842 Ate ig 280 680 240 580 370 500 240 580 370 500 240 580 240 580 240 580 240 580 s88 eee a 45 45 45 50 55 45 45 Ap S76 Precise busy tone 45 45 45 45 50 55 45 45 45 S78 detection level Busy tone type Imprecise Imprecise Imprecise Imprecise Imprecise Imprecise Imprecise Imprecise Imprecise S20 Busy tone 350Hz Sel Sel 19 Busy tone 440Hz Sel Sel Sel Sel 19 Busy tone 480Hz Sel Sel Sel Sel S Sel S19 Busy tone 620Hz Sel i i 19 Cadenced busy Cadence Cadence
29. ct Test Mode sees 20 BBs OZ POWER DO a redda ENEE dee abu ened ute ee Vo 20 x WE TEE 21 KAN ue KE EE 21 4 2 Reading S T gisters i munnar daa did EE 21 4 3 Setting Reading S registers While in Online Command Mode 21 4 4 S registers Definitl0ns su minn deene ENEE ENEE 21 4 41 SOS AULOANSWE EE 21 WEN ne Kee EE 22 4 4 3 S2 Escape Code Character 22 4 4 4 S3 Carriage Return Characher eee eee eee 22 4 4 5 S4 Line Feed Character 22 4 4 6 S5 Backspace Characher vener resnnrnesnnnnnennenennn 22 4 4 7 S6 Wait to Blind Dal sss sees 22 4 4 8 S7 Wait For Carrier After Dialimg sese eee 22 4 4 9 S8 Pause Time For CGomma sese eee eee ee eee 23 4 4 10 59 Carrier Detect Response Time 23 4 4 11 S10 Lost Carrier To Hang Up Delai 23 Rev 2 0 3 73M2901CE AT Command User Guide UG 2901GE 027 4 4 12 S11 DTMF Dialing Gpeed A 23 4 4 13 S12 DTMF Twist Dial Register 24 4 4 14 513 DTMF Transmit Attenuaiion sss eee eee eee eee 25 4 4 15 514 Bit Mapped Register AAA 25 4 4 16 515 Calling Tone Off Time EE 26 4 4 17 S16 Calling Tone On TIME user fees dekade eder kan akkar danket 26 4 4 18 S17 Minimum Ring Frequency Register sse eee eee 26 4 4 19 518 Maximum Ring Frequency Register sse eee eee 26 4 4 20 S19 Dial Tone and Busy Precise Tones Bit Mack 26 4 4 21 520 Call Progress Tones Detect Type 27 4 4 22 521 Bit Mapped Register AAA 27 4 4 23 S22 Bit Mapped Register AAA 28 4
30. d state was entered by issuing the AT escape sequence or turning DTR from ON to OFF with the appropriated S Register setting in effect The O n command applies only to asynchronous operation O0 Ifyou have returned to Command state from Data state without breaking a connection the OO command will return you on line Data state O 1 7 Retrain O1 Similar to OO but also causes the modem to initiate an equalizer retrain sequence 02 Enables the modem to respond to a remote request for retrain O3 Disables the modem to respond to a remote request for retrain default 04 Enables speed negotiation 05 Disables speed negotiation default 06 Enables rate change to 1200 bps O7 Enables rate change to 2400 bps default Note If commands O0 or O1 are given to the modem while not connected it will respond with ERROR 2 16 P Pulse Dial Causes the modem to pulse dial until tone dialing is selected or the modem is reset 2 17 Qin Result Codes On Off The Q n command tells the modem to either report result codes or to remain quiet Result codes acknowledge AT commands and call status events Also refer to the V n and X n commands Q0 Report Result Codes default Q1 Stay quiet 2 18 R n Select Data Terminal Ready Option The R n command selects how the Data Terminal Ready DTR signal is used by the modem RO In Asynchronous mode the modem ignores DTR Default R1 Modem assumes the Command State when DTR t
31. ecise Detect Level 40 4 4 78 S77 Pre Dial Call Progress Precise Detect Level 41 4 4 79 S78 Post Dial Call Progress Precise Detect Level 41 4 4 80 S79 FSK Originate Carrier Detect Level 41 4 4 81 580 FSK Answer Carrier Detect Level 41 4 4 82 S81 DPSK Originate Carrier Detect Level 41 4 4 83 582 DPSK Answer Carrier Detect Level mme 41 4 4 84 583 QAM Originate Carrier Detect Level 41 4 4 85 584 QAM Answer Carrier Detect Level 41 4 4 86 585 DTMF Transmit Level 42 4 4 87 586 Flash On Time 42 4 4 88 587 Flash Off Time he 42 4 4 89 588 Imprecise Filter Gelechon eee 42 4 4 90 S89 Data Set Heachy AE 42 4 4 91 590 RTS to CTS Turn around Delai 43 4 4 92 591 Call Progress Transmit Level 43 4 4 93 592 Bit Mapped Register sese 43 4 4 94 593 Ring Interval Register sese eee eee eee 43 4 4 95 594 TIES Escape Prompt Delay Timer Register eee eee 44 4 4 96 S95 Caller ID Configuration Heglsier rennene 44 4 4 97 S99 Country Codes Heglsier sse 44 4 4 98 5100 dels 47 4 4 99 S101 USRIX e pakten akademi nede add b e Ga badeand dk dn 47 4 4 100 S102 Direction control for USR1X rrnnnnnrnnnnrnnnnnvnnenvennrvrnnnnrnnnnnnnnrerrenrnrnennnrenennenennne 47 4 4 101 S103 USR2X 4 lt enke baken ka aar TTT 48 4 4 102 S104 Direction control for UH 48 4 4 103 S105 Delay after any Call attempt eee eee ee 48 4 4 104 106 Delay between 1 and 2 attemgpt
32. eed Character Default OAh The S4 register contains the ASCII value of the line feed character It is used only when verbose result codes V1 are selected If you do not want a line feed to be automatically sent after the return following a verbal result code set this value to 0 Range is 0 127 ASCII Default is 10 line feed 4 4 6 S5 Backspace Character Default 08h The S5 register contains the ASCII value of the backspace character Do not set S5 to ASCII 33 to 126 ASCII printable characters or to greater than ASCII 127 Range is 0 32 and 127 ASCII Default is 8 backspace 4 4 7 S6 Wait to Blind Dial Default 2 The S6 register sets the number of seconds the modem waits before blind dialing Range is 1 25 seconds Resolution is 100ms 4 4 8 S7 Wait For Carrier After Dialing Default 50 The S7 register performs two functions It sets the maximum time between dialing and responding to an incoming carrier signal It also sets the duration of the pause generated by the W dial string modifier Range is 1 254 seconds 22 Rev 2 0 UG 2901GE 027 73M2901CE AT Command User Guide 4 4 9 S8 Pause Time For Comma Default 2 The S8 register sets the number of seconds the modem will pause during a pause created by a comma in the dialing sequence Range is 1 254 seconds 4 4 10 S9 Carrier Detect Response Time Default 6 The S9 register sets in 10ths of a second
33. empts to the same phone number before it is blacklisted 4 4 107 109 Delay between Series Re enable delay Default 0 Sets the value of minimum delay since the 1 attempt before re enabling calls to a specific number A special value of 0 means that numbers are never re enabled once blacklisted Range is 0 254 minutes 4 4 108 110 Line In Use Configuration Register Default 70h BitO Enables Off Hook Voltage sensing Parallel pick up detection PPU V Bit 1 Enables On Hook Line In Use Voltage sensing detection LIU V Bit 2 Enables On Hook Line In Use Energy sensing detection LIU E Bit3 Enables Call Waiting Caller ID option This bit applies only to Off Hook Online Type II Caller ID 48 Rev 2 0 UG 2901GE 027 73M2901CE AT Command User Guide Bit 4 Bit 5 Bit 6 Bit 7 Enables HiZ TXAN TXAP while looking for CID only for 2901 no effect for 2909 Enables RxGain 20 dB while looking for CID only for 2901 no effect for 2909 Enables using USER10 output to signal DAA to activate on hook LIU V sensing Enables long space disconnect option When enabled the 73M2901CE sends 3 5 seconds of space bits zeros before disconnecting after receiving an on hook command from the DTE When enabled the 73M2901CE disconnects and goes on hook upon receiving NULL characters from the remote modem for 1 5 seconds States Idle mode or ATD Wait for Dial Pu
34. er sets the duration of the alternate cadence minimum ring OFF time in units of 40ms 4 4 59 558 Cadence B Max Off Time of Ring Default 0 The value of this register sets the duration of the alternate cadence maximum ring OFF time in units of 40ms 4 4 60 559 Bit Mapped Register Default 0 Register S59 reflects the status of various options This register is normally used as a read only register Register 559 is a bit mapped register whose bits are defined as follows Bit 0 In FSK Skipped STOP resync to it In QAM or PSK Full equalizer back propagation Bit 1 16 way decisions in QAM receiver Bit 2 Scrambler invert flag whether inversion of next modulated bit should occur Bit3 Scrambler history bit Bit 4 De scrambler invert flag Bit 5 De scrambler history bit Bit 6 Last received bit Bit 7 Last transmitted bit Rev 2 0 35 73M2901CE AT Command User Guide UG 2901CE 027 4 4 61 560 Bit Mapped Test Control Register Default 0 Register 560 reflects the status of test control options and the generation of data patterns Register S60 is a bit mapped register whose bits are defined as follows Bit 4 Er ke Function 0 0 0 Data Mode default 0 0 1 Send Marks 0 1 0 Send Spaces 0 1 1 Send Dotting 5 1 0 0 Send S1 1 0 1 Send SO 1 1 0 Send Dotting A 1 1 1 Send Flags Bit 3 Enable detection of dial tone DHA 0 Disables the sc
35. es of operation BO Selects ITU V 22Bis V 22 or V 21 operation default B1 Selects Bell212A or Bell103 operation B2 Selects 1200 bps receive and 75 bps transmit for V 23 operation B3 Selects 75 bps receive and 1200 bps transmit for V 23 operation B4 Selects 1200 bps receive for Bell202 operation B5 Selects 1200 bps transmit for Bell202 operation B6 Selects 1200 bps receive and transmit for 4 Wire V 23 operation V23T B7 Selects 1200 bps receive and transmit for 4 Wire V 23 operation V23T B8 Selects 1200 bps receive and transmit for 4 Wire Bell202 operation B202T B9 Selects 1200 bps receive and transmit for 4 Wire Bell202 operation B202T B10 Selects 1200 bps V 23 Half duplex mode V23H B10 and B11 are the same B11 Selects 1200 bps V 23 Half duplex mode V23H B10 and B11 are the same 2 4 C n Select Carrier Detect Option The C n command selects how the Carrier Detect CD signal is controlled CO CD forced ON Default C1 CDON in presence of valid debounced carrier signal C2 CD ON in presence of raw carrier signal Receive data independent of valid carrier signal May be reserved Operation of DCD Normal modes CO ON at all times 8 Rev 2 0 UG 2901GE 027 73M2901CE AT Command User Guide je a zit OFF DCD ON C1 ON while connected DCD Not connected Connected Not Connected V 23 turnaround DCD V 23 turn around 2 5 D n n Dialing String This command puts
36. etected last tone 1 Last value before imprecise tones went off Bit 4 Ring Bounce Bit 6 0 ITU answer tone 180 Degrees Phase Reversal disabled 1 For ITU answer tone 180 Degrees Phase Reversal will occur every 450ms Bit 7 0 Does not preserve the user changes to the DSP filters between connections default 1 Preserves the user changes to the DSP filters between connections 4 4 94 593 Ring Interval Register Default 20 The value in this register sets the duration of the minimum ring interval in units of 10ms Range is 1 to 254 Rev 2 0 43 73M2901CE AT Command User Guide UG 2901CE 027 4 4 95 594 TIES Escape Prompt Delay Timer Register Default 100 The value in this register sets the duration of delay in units of 10ms Range is 1 to 254 4 4 96 95 Caller ID Configuration Register Default 88h Bit 0 Dual Tone Alert Signal expected Bit 2 1 Number 0 3 of Line Reversal and or Ring Pulse Alert Signals expected before Caller ID Bit 3 CID expected between 1 and 277 Power Rings Note bits 0 through 3 of S95 are ignored if bit 7 0 Bit 4 Enables Caller ID option This bit applies only to On Hook Offline Type Caller ID Bit5 0 FSK modulation used for CID 1 DTMF type Caller ID Bit6 Enables using USER 11output to signal DAA to enter CID state during measure de offset in IDLE mode Bit 7 Enables using USER11 output to signal DAA to enter Idle line signaling state for CID Bit 7
37. firmware revision number 14 Returns copyright notice 15 RAM test 16 MAG RAM test I7 MAC ROM test 18 RAM address decode test 19 MAC address decode test 110 Return ROM CRC 111 Check ROM CRC 2 11 J n PTT Test Default is take no action not in test mode JO Stop J test in progress J1 Transmit DTMF tones specified by S12 S13 and S85 J2 Transmit Answer tone or Calling tone specified by S27 S13 and S91 J3 Transmit Modulation specified by 14 S30 S60 and the B command J4 Transmit Silence J5 Delay To set up the delay use J5 n n is in 10ms Range is 1 to 211 J6 Allow detection of CAS and DTMF tones J7 Analog interface test mode S113 is used as the minimum carrier detect threshold J8 Type 2 CID test mode for use with the Advent system Rev 2 0 11 73M2901CE AT Command User Guide UG 2901CE 027 2 12 K n Flow Control The K n command selects which flow control options are available when rate buffering KO Flow Control Disabled Default When 15 or more bytes When 4 or less bytes are in the TX buffer are in the TX buffer K3 RTS CTS CTS K4 XON XOFF RTS CTS flow control 2 13 L n Fast Connect The L n command enables the modem to perform 1200 Fast Connects LO Disable Fast Connect default L1 Disable 2100Hz answer tone and billing delay L2 2 second billing delay enabled with no 2100Hz answer tone L3 400ms answer tone and billing delay enabled 2 14 N n Data Set Ready Signal Co
38. in V 22 bis or V 22 Bit7 Causes S63 to be sent out USER PORT 2 available in a special test package only 4 4 63 562 Signal Detect Register 2 Default 0 This is a read only register and it is only valid in Call Progress BitO Detected 1650Hz V 21 answer marks Bit1 Detected 1300Hz Bit2 Detected 2100Hz ITU answer tone Bit3 Reserved Bit4 Detected 2225Hz Bell answer tone Bit 5 Detected 2250Hz component of USB1 Bit6 Detected 1100Hz fax calling tone Detect changes to 1270Hz at the end of answer Call Progress Bit 7 Detected 1300Hz data calling tone Detect changes to 980Hz at the end of answer Call Progress 4 4 64 S63 Precise Call Progress Detect Default 0 This is a read only register and it is only valid in Call Progress Bit 0 Detected f0 350Hz Bit 1 Detected f1 440Hz Bit 2 Detected f2 480Hz Bit 3 Detected f3 620Hz Bit 4 Detected 2130Hz CAS Tone component Bit 5 Detected 2750Hz CAS Tone component Bit 6 Busy tone detection enabled Bit7 Call Progress filter 1 detect bit 4 4 65 564 Signal Quality Default 0 This is a read only register that contains the Signal Mean Square Error MSE value calculated during demodulation Not valid in FSK Rev 2 0 37 73M2901CE AT Command User Guide UG 2901GE 027 4 4 66 Default 0 565 DTMF Detect Register Bit 7 indicates a valid DTMF detection A register value of zero indicates no detect for the polled applic
39. in auto answer mode and cause it to answer on the ring set by SO A value of zero will disable auto answer RI will toggle after each ring cycle is qualified the timing determined by the setting of the 553 minimum ring off time register and the DTE data rate The RI signal duration will be 60ms plus the time to output the RING result code wp RING ON TIME i RING OFF TIME RING SO is cleared on Reset Rev 2 0 21 73M2901CE AT Command User Guide UG 2901CE 027 4 4 2 S1 Ring Count Default 0 When the modem is set for Auto Answer register S1 keeps track of the number of times the phone rings After the end of ring on time the S1 register is reset to 0 after the maximum of S54 or S58 seconds which ever is less Range is 0 255 rings 4 4 3 S2 Escape Code Character Default 43 The S2 register contains the ASCII value of the Escape Command character The default is 43 which is the ASCII If you select a value greater than 127 the Escape feature is disabled and you cannot switch from the Data State to Command State while maintaining your data connection Range is 0 127 ASCII Default is 43 4 4 4 S3 Carriage Return Character Default ODh The S3 register contains the ASCII value of the carriage return character This character terminates both the command line and the result codes Range is 0 127 ASCII Default is 13 carriage return 4 4 5 54 Line F
40. ister sets the duration of the alternate cadence minimum busy signal OFF time in units of 40ms 4 4 51 550 Cadence B Max Off Time of Busy Default 0 The value of this register sets the duration of the alternate cadence maximum busy signal OFF time in units of 40ms 4 4 52 551 Cadence A Min On Time of Ring Default 40 The value of this register sets the duration of the primary cadence minimum ring ON time in units of 40ms 4 4 53 552 Cadence A Max On Time of Ring Default 60 The value of this register sets the duration of the primary cadence maximum ring ON time in units of 40ms 4 4 54 553 Cadence A Min Off Time of Ring Default 80 The value of this register sets the duration of the primary cadence minimum ring OFF time in units of 40ms 34 Rev 2 0 UG 2901GE 027 73M2901CE AT Command User Guide 4 4 55 554 Cadence A Max Off Time of Ring Default 120 The value of this register sets the duration of the primary cadence maximum ring OFF time in units of 40ms 4 4 56 555 Cadence B Min On Time of Ring Default 0 The value of this register sets the duration of the alternate cadence minimum ring ON time in units of 40ms 4 4 57 556 Cadence B Max On Time of Ring Default 0 The value of this register sets the duration of the alternate cadence maximum ring ON time in units of 40ms 4 4 58 557 Cadence B Min Off Time of Ring Default 0 The value of this regist
41. itiate a Remote Digital Loopback test ITU V 54 Loop 2 Initiate a Remote Digital Loopback self test ITU V 54 Loop 2 Initiate a Local Analog Loopback self test ITU V 54 Loop 3 Z Power Down Allows the part to go into deep power down mode All commands following the Z command are ignored therefore it is advisable that the Z command be at the end of a command line 20 Rev 2 0 UG 2901GE 027 73M2901CE AT Command User Guide 4 S registers The 73M2901CE allows the user to directly access the S registers through the AT Command Set This feature enables an added level of control over the modem s operation Setting S registers directly involves some amount of risk and requires understanding of the internal function of the modem The order in which S registers are set in the command string may be significant for instance when setting S99 it is necessary that it be the first command in the command string because it affects many other S registers The F command which the restores factory defaults voids any commands preceding it including S Register settings AT commands themselves set S registers so the user must be aware of each operation remembering that each command in a command string is executed one at a time in the order they are presented in the command string The AT Command interpreter can set and reverse the commands giving a result far from what was intended the modem assumes that the user knows what he or she is doing
42. ling Range is 20 211 milliseconds Rev 2 0 23 73M2901CE AT Command User Guide UG 2901 CE 027 4 4 13 Default 20h 512 DTMF Twist Dial Register Register 512 reflects the status of the DTMF options Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Reserved TWIST2 TWIST1 TWISTO DTMF3 DTMF2 DTMF1 DTMFO DTMF3 DTMF2 DTMF1 DTMFO Digit Low Tone High Tone 0 0 0 0 D 941 1633 0 0 0 1 1 697 1209 0 0 1 0 2 697 1336 0 0 1 1 3 697 1477 0 1 0 0 4 770 1209 0 1 0 1 5 770 1336 0 1 1 0 6 770 1477 0 1 1 1 7 852 1209 1 0 0 0 8 852 1336 1 0 0 1 9 852 1477 1 0 1 0 0 941 1336 1 0 1 1 N 941 1209 1 1 0 0 941 1477 1 1 0 1 A 697 1633 1 1 1 0 B 770 1633 1 1 1 1 C 852 1633 TWIST2 TWIST1 TWISTO Relative Level 0 0 0 0 dB nominal 0 0 1 1 dB low frequency below the high frequency tone 0 1 0 2 dB low frequency below the high frequency tone default 0 1 1 3 dB low frequency below the high frequency tone 1 0 0 4 dB low frequency below the high frequency tone 1 0 1 5 dB low frequency below the high frequency tone 1 1 0 6 dB low frequency below the high frequency tone 1 1 1 7 dB low frequency below the high frequency tone Note For normal operation only the twist needs to be set The digit is filled in automatically when dialing 24 Rev 2 0 UG 2901CE 027 73M290
43. lse Tone Call Connected AT Command Command Tone or Wait Dialing Dialing Progress Phase Processing Processing for Blind Dial Phase other than Delays ATD Polling of No Yes Yes No Yes Yes Yes Line in Use Signal Action If N A No seizing Release of the N A Release of Release Release of LIU Is of the phone line the line of the line the line Active line Returned N A Line in use Line in use N A Line in Line in Line in Code to use use use DTE 4 4 109 111 Line In Use Settle Time Default 20 Sets the settling time to wait after the LIU sensing circuit is enabled before sampling LIU signal This is used for both on hook Voltage sensing LIU and off hook PPU detection Range is 0 254 X10ms units 4 4 110 Default 20 112 Line In Use Energy Detection Wait Sets the qualify time that Energy must remain below threshold Range is 0 254 X100ms units 4 4 111 Default 15 113 Line In Use Energy Detection Threshold Sets the Threshold for the voice Energy Lower number means Stronger signal strength The value of 0 would effectively never detect and higher than 95 would always detect This register is also used by J7 test mode as a minimum carrier detect threshold Range is 0 95 4 4 112 114 Hi S115 Lo Maximum Carrier Detect Threshold J7 Defaults HI 0 LOW 50h Sets the maximum carrier detect threshold used by J7 test mode
44. lt 1 Calling Tone Enable 30 Rev 2 0 UG 2901GE 027 73M2901CE AT Command User Guide 4 4 30 529 Extended Result Selection Cadence Type Selection default 88h Register 529 reflects the status of various options This register is normally read only since its contents are set by other commands Register S29 is a bit mapped register whose bits are defined as follows bits 0 1 0 0 Do not return extended result codes 40 80 The message CONNECT followed by the data rate between the DTE and the modem will be sent to the DTE WO command default 0 1 The CONNECT message will report the DTE speed then enable the carrier and extended result codes W1 command 1 0 The CONNECT message will report the DCE speed All extended result codes are disabled W2 command Bit2 0 AIl Carrier Protocol and Connect Result Codes enabled if W1 in effect 1 All Carrier Result Codes enabled if W1 in effect No Protocol or Connect Result Codes Bit 3 0 Escape sequence disabled 1 Escape sequence enabled Bit 4 0 Alternate cadences for dial tone default 1 Dual cadence for dial tone Bit 5 0 Alternate cadences for busy tone default 1 Dual cadence for busy tone Bit6 0 lt Alternate cadences for Ring default 1 Dual cadence for Ring Bit 7 0 Continuous Dial tone Disabled 1 Continuous Dial tone 4 4 31 30 Bit Mapped Handshake Register Default 6Ch Bit Decimal Value
45. mand requests the modem to report the current value of a specified location of IRAM The value reported is in hexadecimal notation BJ p r n n n Set IRAM Memory BJp r n Set MAC RAM n 0 to 255 decimal or n 00 to FF hexadecimal The BJp r n command allows you to set modify the value of a specified location of IRAM The value n value n can be entered in multiple instances in decimal or hexadecimal preceded by notation 3 3 LI n Set Lease Line Operation Lease line operation is designated by S89 bit 2 n 1 sets lease line bit n 0 clears lease line bit 3 4 P n Alternate Pulse Dial Make Break Ratio The P n command where n 0 or 1 sets S22 bit 7 to new value n The effect of this is to toggle between two pulse dial make break ratios n 0 selects U S 39 61 n 1 selects U K Hong Kong 33 67 This command works only when S32 and S33 are each set to 0 Rev 2 0 19 73M2901CE AT Command User Guide UG 2901CE 027 3 5 TO T1 T3 T4 T5 T6 T7 T8 3 6 T n Select Test Mode n 0 1 3to8 Terminate any test in progress The T command must be the last in the command line Initiate a Local Analog Loopback Test ITU V 54 Loop 3 Initiate a Local Digital Loopback test Instructs the modem to grant a request from the remote modem for a Remote Digital Loopback test Instructs the modem to deny a request from the remote modem for a Remote Digital Loopback test In
46. mmand State Echo mode is OFF E1 Command State Echo mode is ON 2 7 F Load Factory Defaults The F command replaces the current active configuration profile with the factory standard configuration profile stored in permanent memory Returns ERROR result code if modem is off hook 2 8 G Guard Tone Select This command selects the guard tone GO Guard tones disabled default G1 550Hz guard tone enabled G2 1800Hz guard tone enabled 2 9 H n On Hook Off Hook Control n 0or 1 factory default 0 The H n command causes the modem to go off hook or on hook Going off hook means that the modem picks up the telephone going on hook means that the modem hangs up the telephone The H n command applies only to asynchronous operation HO Go On hook hang up or terminate PTT test H1 Go Off hook pick up the phone Note ON HOOK Commands used Z Z HO F JO at the beginning of hook flash at a pulse break and at disconnect and reset OFF HOOK Commands used H1 D J1 J2 J3 J4 A and auto answer 10 Rev 2 0 UG 2901GE 027 73M2901CE AT Command User Guide 2 10 lnl Identification and ROM Tests n 0to 11 Default is no test in progress The I n command requests that the modem respond with certain product information 10 Returns product identification code l1 Returns the firmware ROM checksum number 2 Computes the firmware ROM checksum and returns with either an OK or ERROR result code message EI Returns
47. n 4 S registers Enter AT Commands must be followed by an lt Enter gt EXAMPLES ATFS99 1Y6K3C1R2S30 4 V 22bis using flow control U S ATDT2 Go off hook and dial the number 2 ATS95 10 Set the Caller ID enable pin There are two exceptions to this convention the commands A repeats last instruction issued and enter online command mode are neither preceded by an AT nor followed by a CR nor do they take any arguments They are each described under the AT Commands heading in this section Online Command Mode Online command mode allows the user to issue AT commands including setting and reading some S registers while connected After a connection has been established and in the absence of streaming data one can enter online command mode and send instructions to the modem Not all commands issued while in online command mode will take effect immediately Some AT commands including S Register settings will not take effect until after the connection has been broken For instance you would not be able to change modulation standards or from synchronous to asynchronous data while connected In addition values read from some S registers while in online command mode may not accurately reflect certain states Entering Online Command Mode Issue this command to the modem neither preceded by AT nor followed by lt ENTER gt Timing is critical when entering this command enter each character one after ano
48. nation Impedance Heouremenmts sss sese eee eee eee eee eee eee eee 47 6 Rev 2 0 UG 2901GE 027 73M2901CE AT Command User Guide 1 Introduction The Teridian Semiconductor 73M2901CE supports an optimized version of the industry standard Hayes AT Command Set The primary distinction between the Hayes AT Command Set and the 73M2901CE AT Command Set is in the use of the amp ampersand command The 73M2901CE does not use the amp command Many 73M2901CE commands relate directly to the Hayes amp commands but this is not always the case For instance the 73M2901CE ATC n command is similar to the Hayes AT amp C n command but it is not identical Please be aware that these differences exist AT commands are issued using the following convention AT lt command string gt lt Enter gt AT commands must be preceded by the characters AT The modem uses this sequence of ASCII characters to determine the speed and parity of the DTE The modem expects a command or string of commands to follow Command String Conventions The command string may consist of a letter for example F The command string may consist of a letter followed by a number for example N2 The command string may consist of an S register set equal to a value for example S30 4 The command string may consist of a string of all of the above for example FS99 1B2C1X4S30 4 Generally the order of the commands is not significant unless S registers are set Refer to Sectio
49. ntrol The function of the DSR line is determined by the N n command n 0 to 2 NO DSRis always ON low N1 DSR off high in the idle state and when in a test mode DSR circuit is turned on at start of the handshaking process DSR is turned off when hang up process is started N2 DSR off in the idle state and when in a test mode DSR circuit is turned on at the end of handshake after issuing the CONNECT result code DSR is turned off when hang up process is started 1 Mode V 22bis Protocol enabled through S25 Extended result codes V 22bis Carrier V 42 Protocol Connect Data Connection Result Detection Result Mode 8 Q el Kg el n D 12 Rev 2 0 UG 2901CE 027 73M2901CE AT Command User Guide 2 Mode V 22bis Protocol enabled through S25 Normal result codes V 22bis V 42 Connect Data Connection Detection Result Mode DCD DSR 3 Mode V 22bis Protocol enabled through S25 No result codes V 22bis V 42 Data Connection Detection Mode DCD DSR 4 Mode V 22bis No Protocol Extended result codes V 22bis Carrier Protocol Connect Data Connection Result Result Mode DCD DSR 5 Mode V 22bis No Protocol No result codes V 22bis Data Connection Mode DCD DSR Rev 2 0 13 73M2901CE AT Command User Guide UG 2901CE 027 2 15 O n Return to On Line The O n command is used to go back on line when the comman
50. of Busy sese 34 4 4 50 S49 Cadence B Min Off Time of BUSY sse 34 4 4 51 550 Cadence B Max Off Time of Busy eee 34 4 4 52 551 Cadence A Min On Time of Ring sss sese 34 4 4 53 552 Cadence A Max On Time of Ring sese 34 4 4 54 553 Cadence A Min Off Time of Ring sss sese 34 4 4 55 554 Cadence A Max Off Time of ing 35 4 4 56 S55 Cadence B Min On Time of Ring sss sese 35 4 4 57 S56 Cadence B Max On Time of Ring sss 35 4 4 58 557 Cadence B Min Off Time of Ring sss sese 35 4 4 59 558 Cadence B Max Off Time of Himg sees 35 4 4 60 S59 Bit Mapped Register A 35 4 4 61 S60 Bit Mapped Test Control Hegotsier sese 36 4 4 62 S61 Signal Detect Register T 36 4 4 63 S62 Signal Detect Register 2 37 4 4 64 S63 Precise Call Progress Deiect 37 4 4 65 564 Signal QUAY un 37 4 4 66 565 DTMF Detect Register AAA 38 4 4 67 566 Wait for Dialtone ku 38 4 4 68 567 Qualify Diahtone sss sese eeee eee 38 UG 2901GE 027 73M2901CE AT Command User Guide ER E e EE 38 4 4 70 569 Test Error Countin iine aa da aa da d aa aiaiai i 39 4 4 71 S70 Auto Retrain Thresbold AAA 39 4 4 72 S71 Originate Mode Fallback Timer sese eee eee 39 4 4 73 S72 Pulse Map Caller ID BlackList sees 39 4 4 74 573 Configuration Register T sese eee 39 4 4 75 S74 Billing Delay Heotster AAA 40 4 4 76 S75 Pre Dial Call Progress Imprecise Detect Level 40 4 4 77 S76 Post Dial Call Progress Impr
51. ot sent or if data is sent to the modem instead of AT commands while in this mode the modem will return to data mode 227 AT During a data connection the escape command AT lt ENTER gt returns you to Command State without terminating the data connection so you can enter AT commands 18 Rev 2 0 UG 2901GE 027 73M2901CE AT Command User Guide 3 Extended AT Commands 3 1 QA p Modify Read MAC RAM Memory Value QA p r Inquire MAC RAM Memory Value The GAf p r command requests the modem to report the current value of a specified location of MAC RAM The value reported is in decimal notation A p r Inquire MAC RAM Memory Value The GA p r command requests the modem to report the current value of a specified location of MAC RAM The value reported is in hexadecimal notation A p r n n n Set MAC RAM Memory Afp r n Set MAC RAM n 0 to 255 decimal or n 00 to FF hexadecimal The GAl p r n command allows you to set modify the value of a specified location of MAC RAM The value n can be entered in multiple instances separated by a dot in either decimal or hexadecimal preceded by notation 3 2 B p Modify Read IRAM Memory Value GB p r Inquire IRAM Memory Value The B p r command requests the modem to report the current value of a specified location of IRAM The value reported is in decimal notation B p r Inquire IRAM Memory Value The BJp r com
52. rambler default 1 Enables the scrambler Bit5 0 Disables the de scrambler default 1 Enables the de scrambler Bit 6 In RDLB mode Bit7 In ALB mode Note In V 22 and V 22bis modes the first pattern out of reset should not be spaces the scrambler needs to be primed with another pattern 4 4 62 S61 Signal Detect Register 1 Default 0 Register S61 reflects the status of various options It is only valid in Data mode Register S61 is a bit mapped register that behaves in the following manner when its bits are set BitO Causes S62 or S65 J6 to be sent out USER PORT 2 available in a special test package only Bit 1 Remote digital loopback enabled equivalent to T4 Bit2 Carrier detect bit This bit will be set when conditions for V 24 circuit 104 have been met by the modulation mode being connected Bit3 Wait for Calling Tone before sending Answer Tone DH A In Call Progress Energy detect bit This bit will be set if the receive level is above a certain threshold In Data Mode Raw Carrier Detect bit Bit 5 S1 Detect bit This will be set if S1 unscrambled 1100Hz is detected This bit is also used to request if connected in V 22 bis or V 22 detect a retrain 36 Rev 2 0 UG 2901GE 027 73M2901CE AT Command User Guide Bit 6 USB1 Detect bit This will be set if USB1 unscrambled binary ones is detected This bit is also used to detect a remote digital loopback request if connected
53. ransitions from ON to OFF R2 Modem goes on hook hangs up disables the Auto Answer mode and assumes the Command State when DTR transitions from ON to OFF Turning DTR back ON will enable auto Answer mode R3 Modem is reset when DTR transitions from ON to OFF R4 Enable V 23 Turnaround via DTR On to Off edge triggered in Master mode Turn around is done via RTS in all other R command settings R5 Power Down with setting DTR high requires hard reset to resume normal operation 14 Rev 2 0 UG 2901GE 027 73M2901CE AT Command User Guide 2 19 S r Modify Read S registers S r Show S register Value The S r command requests the modem to report the current value of register r These registers are used to set up various operating parameters of the modem as explained in Section 5 The value reported is in decimal notation S r Show S register Value in Hexadecimal The S r command requests the modem to report the current value of register r The value reported is in hexadecimal notation S r Show Successive S register Values The S r command requests the modem to report the current value of r and successive registers The values are reported in decimal notation The number of registers reported corresponds to the number of question marks given to the modem For an example S10 will report the values stored in the registers S10 S11 and S12 S r Show Successive S register V
54. reak time in ms Range is 1 to 211 4 4 35 534 Pulse Dial Inter digit Timer Default 75 Duration of Pulse Inter digit time interval in units of 10ms Range is 1 to 211 4 4 36 S35 Cadence A Min On Time of Dial Tone Default 0 The value of this register sets the duration of the primary cadence minimum dial tone ON time in units of 40ms 4 4 37 S36 Cadence A Max On Time of Dial Tone Default 0 The value of this register sets the duration of the primary cadence maximum dial tone ON time in units of 40ms 4 4 38 S37 Cadence A Min Off Time of Dial Tone Default 0 The value of this register sets the duration of the primary cadence minimum dial tone OFF time in units of 40ms 32 Rev 2 0 UG 2901CE 027 73M2901CE AT Command User Guide 4 4 39 S38 Cadence A Max Off Time of Dial Tone Default 0 The value of this register sets the duration of the primary cadence maximum dial tone OFF time in units of 40ms 4 4 40 S39 Cadence B Min On Time of Dial Tone Default 0 The value of this register sets the duration of the alternate cadence minimum dial tone ON time in units of 40ms 4 4 41 540 Cadence B Max On Time of Dial Tone Default 0 The value of this register sets the duration of the alternate cadence maximum dial tone ON time in units of 40ms 4 4 42 S41 Cadence B Min Off Time of Dial Tone Default 0 The value of this register sets the duration of the alternate
55. rrier is detected for answering PSK Range is 1 to 96 a larger value corresponds to a lower signal level The range is 25 to 45dBm 4 4 84 583 QAM Originate Carrier Detect Level Default 40 583 determines at what minimum level carrier is detected for originating QAM Range is 1 to 96 a larger value corresponds to a lower signal level The range is 25 to 45dBm 4 4 85 S84 QAM Answer Carrier Detect Level Default 35 584 determines at what minimum level carrier is detected for answering QAM Range is 1 to 96 a larger value corresponds to a lower signal level The range is 25 to 45dBm Rev 2 0 41 73M2901CE AT Command User Guide UG 2901GE 027 4 4 86 S85 DTMF Transmit Level Default 60 585 determines the maximum value sent to the DAC when sending DTMF tones Range is 60 to 127 4 4 87 S86 Flash On Time Default 50 This register determines the on time for flash hook in 10ms Range is 1 211 4 4 88 587 Flash Off Time Default 50 This register determines the off time for flash hook in 10ms Range is 1 211 4 4 89 588 Imprecise Filter Selection Default 0 Bits 0 through 3 0 to 15 selected imprecise filters for pre dial Bits 4 through 7 0 to 15 selected imprecise filters for post dial Frequencies are defined as follows Hex Value Frequency Range 0 280 680Hz 1 370 500Hz 2 240 580Hz 3 200 650Hz F User Defined 4 4 90 S89
56. s see the V n command Default Bit 4 0 No Match 1 First Cadence of Dual Cadence Matched Bit 5 0 Touch tone dialing see T or P command 1 Pulse dialing Default Bit6 General Handshake Complete Bit 0 Not Connected 1 Connected Bit7 0 Answer 1 Originate Default 4 4 16 15 Calling Tone Off Time Default 17 The value of this register sets the duration of the calling tone off time in units of 100ms 4 4 17 16 Calling Tone On Time Default 60 The value of this register sets the duration of the calling tone on time in units of 10ms 4 4 18 17 Minimum Ring Frequency Register Default 10 The minimum ring frequency to be acceptable in Hz Range is from 0 to 253 Note The values need to be doubled if a full wave detector is used 4 4 19 518 Maximum Ring Frequency Register Default 75 The maximum ring frequency to be acceptable in Hz Range is from 1 to 254 Note The values need to be doubled if a full wave detector is used 4 4 20 519 Dial Tone and Busy Precise Tones Bit Mask Default C3h Defines which precise tones constitute a dial tone and which constitute a busy tone High nibble defines dial tone and low nibble defines busy bit 0 S63 bit 0 is selected tone of precise dial tone Default bit 1 S63 bit 1 is selected tone of precise dial tone Default bit2 S63 bit 2 is selected tone of precise dial tone bit 3 S63 bit 3 is selected tone of precise dial
57. state written to it 4 4 100 S102 Direction control for USR1x Default 4 USR1x Port Direction If a bit is set to 0 the corresponding port pin is an output If it is a one the corresponding port pin is an input USR10 1 USR11 2 etc Rev 2 0 47 73M2901CE AT Command User Guide UG 2901CE 027 4 4101 S103 USR2x l o Default 254 USR2x I O Port status and control When read outputs the current status of USR1 port When defined as an output a user port pin will assume the state written to it Only USR20 is accessible 4 4 102 104 Direction control for USR2x Default 1 USR2x Port Direction If a bit is set to 0 the corresponding port pin is an output If it is a one the corresponding port pin is an input USR20 1 4 4 103 105 Delay after any Call attempt Default 5 Sets the minimum delay between any call attempts of any phone number Range is 1 254 second Used for blacklisting 4 4 104 106 Delay between 1 and 2 attempt Default 5 Sets the minimum delay between 1 and 2 call attempt of the same phone number Range is 1 254 second Used for blacklisting 4 4 105 107 Delay between n and n 1 attempt Default 60 Sets the minimum delay between n and n 1 call attempt after 2 try of the same phone number 1 254 second Used for blacklisting 4 4 106 108 Maximum successive Failed attempts Default 15 Sets the number of maximum failed att
58. the modem into originate mode and instructs the modem to dial the phone number expressed by the string argument n n The number will be dialed with either tones or pulses depending on how the last number was dialed On power up this command will default to pulse dialing See the note in DT n n command The allowable arguments for n n differ for pulse and tone dialing see the descriptions under DT n n and DP n n DP n n n 0 9 P T R W S r n J5 n This command instructs the modem to dial the phone number expressed by the argument n n using pulse dialing See the detailed description of the arguments under DT n n below DT n n n 0 9ABCD PTR W Sfrf nJu5 n This command instructs the modem to dial the phone number expressed by the argument n n using tone dialing In addition to 0 9 A B C D which are the same as the keys on your phone there are some special characters that can be included in a dialing string They are called Dial String Modifiers and they define how the phone number is to be dialed These characters are PRT W A D The characters A B C D and the symbols and can be used only during tone dialing They are typically used to access newer features of modern telephone systems P The modem pulse dials the digits that follow R The modem uses answer mode frequencies after dialing the number This allows you to dial up an originate only modem Busy detect is disabled during Reverse
59. ther at a steady rate If the modem does not respond repeat the command adjusting the speed of the key presses The modem should respond with OK The modem is now ready to accept AT Commands just as if it were in idle mode The can be followed by an AT command without waiting for the OK so the string ATS10 2550 could be sent to cause the modem to go into the command mode change the setting of S10 and go back on line without waiting for the modem to return the OK message Rev 2 0 7 73M2901CE AT Command User Guide UG 2901CE 027 Return to Data Mode Issue the following command ATO The modem should respond with CONNECT DTE SPEED The modem is now back in data mode and ready to send and receive data 2 AT Commands 2 1 A Answer The A command causes the modem to immediately go on line off hook in the Answer mode and attempt to handshake regardless of the value of register SO discussed later This command gives you a method of manually answering an incoming phone call For restrictions see also the R command 2 2 A Repeat Last Command The A command causes the modem to re execute the last command that was issued For example this command can be used to redial a number if the previous command was a dial command NOTE A and are the only commands that are neither preceded by AT nor followed by lt Enter gt 2 3 B Bell ITU V 23 or Bell202 Operation The B n command is used to select between mod
60. tocol is detected Bit 1 1 LAP M Protocol Note In order to perform a connection without protocol negotiation clear all bits set to 0 When a connection is made and the selected protocol is detected an appropriate result code is returned PROTOCOL NONE or numeric 70 PROTOCOL LAPM or numeric 77 If no protocol is detected within 1 5 seconds after CARRIER is established PROTOCOL NONE or numeric result code 70 will be sent 4 4 27 526 Bit Mapped Data Mode Control Register Default 0 Register S26 reflects the status of certain options Register S26 is a bit mapped register whose bits are defined as follows Bit 0 1 Force rate change to 1200 bps Bit 1 0 Disables speed negotiation during a retrain request default 1 Enables speed negotiation during a retrain request Bit2 0 Disables automatic retrain requests default 1 Enables an automatic retrain request to be negotiated Bit3 0 Disables retrain request response default 1 Enables the modem to respond to a retrain request DHA 0 Select 1800 Hz guard tone to be generated during answer mode handshake default 1 Select 550 Hz guard tone to be generated during answer mode handshake not used in North America Rev 2 0 29 73M2901CE AT Command User Guide UG 2901CE 027 Bit 5 0 Disables guard tone generation default 1 Enables guard tone generation Bit6 0 Disable V 23 turnaround 1 Enable V 23 t
61. tone bit4 S63 bit 0 is selected tone of precise busy 26 Rev 2 0 UG 2901CE 027 73M2901CE AT Command User Guide bit 5 S63 bit 1 is selected tone of precise busy Default bit 6 S63 bit 2 is selected tone of precise busy bit 7 S63 bit 3 is selected tone of precise busy Default Note See calling code table on use 4 4 21 520 Call Progress Tones Detect Type Default 11h Busy Dialtone Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Bits 3 7 Bits 2 6 Bits 1 5 Bits 0 4 Function 0 0 0 1 Detect Imprecise tones ONLY default 0 0 1 0 Detect All Precise tones ONLY 0 1 0 0 Detect Any of the Precise tones 4 4 22 21 Bit Mapped Register Default 01h BitO 0 Keypress abort disable 1 Keypress abort enable Default Bit 1 0 Use debounce carrier detect Default 1 Use raw carrier detect set by C2 command Bit 2 0 lt Disable V 23 turnaround via DTR toggle Default 1 Enable V 23 turnaround via DTR toggle set by R4 command Bit 4 Bit 3 Function DTR Control 0 0 Modem ignores DTR Default RO 0 1 Modem assumes the Command State when DTR transitions from ON to OFF R1 Modem goes on hook disables Auto Answer and assumes the Command State when DTR transitions from ON to OFF Auto Answer can be enabled by transitioning DTR from OFF to ON R2 1 1 Modem is reset when DTR transitions from ON to OFF R3
62. um level precise call progress tones are detected before dialing Range is 1 to 96 a larger value corresponds to a lower signal level The default value translates into 45dBm The dBm level depends on the DAA used The range is 25 to 45dBm Refer to table under S78 4 4 79 578 Post Dial Call Progress Precise Detect Level Default 30 578 determines at what minimum level precise call progress tones are detected after dialing Range is 1 to 96 a larger value corresponds to a lower signal level The default value translates into 45dBm The dBm level depends on the DAA used The range is 25 to 45dBm 4 4 80 S79 FSK Originate Carrier Detect Level Default 35 579 determines at what minimum level carrier is detected for originating FSK Range is 1 to 96 a larger value corresponds to a lower signal level The range is 25 to 45dBm 4 4 81 S80 FSK Answer Carrier Detect Level Default 35 580 determines at what minimum level carrier is detected for answering FSK Range is 1 to 96 a larger value corresponds to a lower signal level The range is 25 to 45dBm 4 4 82 581 DPSK Originate Carrier Detect Level Default 40 581 determines at what minimum level carrier is detected for originating PSK Range is 1 to 96 a larger value corresponds to a lower signal level The range is 25 to 45dBm 4 4 83 S82 DPSK Answer Carrier Detect Level Default 35 582 determines at what minimum level ca
63. urnaround Bit 7 Channel Set 0 Tx 1200 bps Bell 202 and V 23 slave mode default 1 Rx 1200 bps Bell 202 and V 23 master mode 4 4 28 S27 Call Progress Transmit Register Default Oh Register S27 reflects the status of certain options Default is 64 Register S27 is a bit mapped register that behaves in the following manner when its bits are set Bit 0 Do not send DTE OFF characters in pseudo sync Y4 or amp Q4 mode Bit1 Transmit 1100 Hz when set to one Bit2 Transmit 1300 Hz when set to one Bit3 Transmit 2100 Hz when set to one Bit4 Transmit 2225 Hz when set to one Bit5 Disconnect Bit Bit 6 O CCITT V 22bis V 22 V 21 V 23 equivalent to BO Default 1 Bell103 Bell202 Bell212A equivalent to B1 Bit 7 Protocol Selection Done read only Precedence is as follows Bit 1 takes precedence over bit 2 which takes precedence over bit 3 which in turn takes precedence over bit 4 4 4 29 528 Fast Connect and Calling Tone Enable Default 32h or 33h reserve bit 0 toggles in idle state Register 528 reflects the status of various options Register 528 is a bit mapped register whose bits are defined as follows Bit 0 Reserved SAGC Bit Bit 1 Reserved Bit 2 Demodulated FSK Microbit Bit 3 Sync Mode set by Y1 or Y4 Bit 4 Answer Tone Enable 1200 bps default Bit 5 Billing Delay Enable 1200 bps default Bit 6 400ms Answer Tone 1200 bps Bit 7 0 Calling Tone Disable defau
64. v 2 0 39 73M2901CE AT Command User Guide UG 2901GE 027 4 4 75 574 Billing Delay Register Default 20 This register sets the duration of billing delay in units of 100ms Range is 20 254 4 4 76 S75 Pre Dial Call Progress Imprecise Detect Level Default 30 575 determines at what minimum level imprecise call progress tones are detected before dialing Range is 1 to 96 a larger value corresponds to a lower signal level The default value translates into 45 dBm The dBm level depends on the DAA used The range is 25 to 45 dBm Refer to the following table for registers S75 S78 Detect Level S75 S76 S77 dBm S78 Value decimal 25 3 26 3 27 4 28 4 29 5 30 5 31 6 32 7 33 8 34 9 35 10 36 11 37 12 38 14 39 15 40 17 41 19 42 22 43 24 44 27 45 30 4 4 77 576 Post Dial Call Progress Imprecise Detect Level Default 30 576 determines at what minimum level imprecise call progress tones are detected after dialing Range is 1 to 96 a larger value corresponds to a lower signal level The default value translates into 45 dBm The dBm level depends on the DAA used The range is 25 to 45 dBm Refer to table under S78 40 Rev 2 0 UG 2901GE 027 73M2901CE AT Command User Guide 4 4 78 S77 Pre Dial Call Progress Precise Detect Level Default 30 S77 determines at what minim

73M2901CE AT Command User Guide

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