Valcom V-9923B door intercom system
Contents
1. 1 B T W BL 26 1 R BL W 1 2 L W O 27 3 Ls OW 2 4 W G 28 5 INH GW 3 6 TO WBR 29 7 RO BRW 4 8 W S 30 9 S W 5 10 R BL 31 11 BL R 6 12 R O 32 13 O R 7 14 R G 33 15 G R 8 16 R BR 34 17 BR R 9 18 R S 35 19 S R 10 20 BK BL 36 21 IN BL BK 11 22 BK O 37 23 O BK 12 24 38 25 G BK 13 26 BK BR 39 27 BR BK 14 28 5 40 29 S BK 15 30 Y BL 41 31 BL Y 16 _ 32 42 33 OlY 17 34 43 35 18 36 Y BR 44 37 BR Y 19 38 YIS 45 39 S Y 20 40 V BL_ 46 41 BL V 21 42 47 43 2 22 44 V G 48 45 G V 23 46 AG V BR 49 47 24 48 WS 50 49 BB S V 25 50 66B350 FIGURE 3 947923 PART OF PBX LOOP START 7 7 WEL 1 OUTGOING ais TRUNK R R 2 ROTARY 7 PBX ANALOG BRW 8 STATION PORT R RO 8 FIGURE 4 CONNECTIONS OF V 9923B TO PABX V 9923B PART OF KEY TELEPHONE PART OF CONNECTING INSTRUMENT BLOCK ROW P U WEL 1 R BLW 2 10K GW 6 3 LG OW 4 gt 10 POWER SUPPLY H S 4 2 TO RE2. lt gt TONE ON 1 5 sec 1 5 sec TONE SEQUENCE BEGINS DESIGN The V 9923B provides two or three digit code call paging via a loop start trunk port on a PABX or by the use of a spare line button on a key system Figure 2 is a simplified block diagram showing the code call unit and its connections NOTE The code call unit is designed so that it will complete a code call sequence before resetting and returning dial tone even if all parties hang up Application Key systems and PABX s used in e Department stores shopping centers Hospitals nursing homes Noisy locations manufacturing plants e Schools universities Additional Materials Required Additional equipment is required to complete a system when using the V 9923B These items are 24 Vdc power supply if existing supply inadequate or non existent type connecting block e 25 pair cable with a female amphenol connector on one end e twisted pair crossconnect wire gt 8 sec 1 gt SEQUENCE CONTINUES UNTIL BEGINS ANSWERED OR AGAIN CALLING PARTY GOES ON HOOK FIGURE 1 947923 PBX T OUTGOING LOOP gt gt R ACCESS 2 gt PORT START CO TRUNK SPARE LINE BUTTON _ ON KEY TELEPHONE _ INH 6 L TO ANALOG ANSWER PORT 09 CIRCUIT TT TONE OUTPUT V 9923B RT TO PAGING CODE CALL SYSTEM
3. a female connector from the unit to the connecting block The cable should be terminated on the connecting block in standard color code order on a row of the connecting block Verify Connections to PABX The connections required to connect the V 9923B to a PABX are shown in Figure 4 The V 9923B requires a loop start trunk port from the PABX for access If more than one link of code call is being provided the second V 9923B would require a trunk also and the two trunks should be in a hunt group within the PABX This arrangement allows access to the second V 9923B if the first V 9923B is in use NOTE ADVISE PERSONNEL USING CODE CALL UNIT TO ALWAYS WAIT FOR DIAL TONE FROM CODE CALL UNIT BEFORE DIALING IN CODE NUMBER To answer the code call requires a station from the PABX If two code call units are being used two stations would be required and they would have to be in a rotary hunt group also Connections to Key Systems The connections required to connect the V 9923B to a 1 2 key system are shown in Figure 5 The R A and L leads are multiplied to all phones in the system Use a spare pick up button and install a 10K Ohm 1 4 watt 5 resistor either in the phone or at the connecting block in series with the A lead from each phone The V 9923B will discontinue the code call paging when it recognizes two phones off hook with two 10K Ohm resistors to ground on the A leads NOTE WHEN USING 1A2 KEY TELEPHONES THE TO AND RO LEADS
4. iN SWITCHED OUT RELAY OUTPUT LS EP1 EP2 YF K USED WITH PBX USED WITH 1A2 KEY SYSTEM 24 AND 10 Vac POWER TO NEXT V 9923B CODE CALL UNIT SUPPLIES IF EQUIPPED FIGURE 2 INSTALLATION all connections before plugging the amphenol end of Precautions the cable into the V 9923B code call unit All precautions have been taken at the factory to insure that the equipment functions properly when installed correctly Please follow the precautions listed below before applying power to the equipment or the equipment may be damaged and the warranty voided a If power was previously connected disconnect or remove power before inserting or removing unit from the amphenol connector b Exercise caution when crossconnecting wires that two adjacent terminals are not bridged together Double check all connections before applying power d Use twisted pair wire for all connections Mounting The Valcom V 9923B code call unit may be mounted in a key cabinet relay rack or on the wall near the distribution frame When choosing a location it is necessary that the loop resistance of the PABX or key system are not exceeded Mount the unit in a vacant space in an equipment cabinet rack or key system cabinet allowing enough room at the rear of the unit to plug in an amphenol connector Mount a 66B type punchdown block near the unit and label it per Figure 3 Run a 25 pair cable with
5. is for flashing or solid lamp indication on access 1A2 key systems only Refer to Figure 8 for Option Switch Settings Two Link Connection If more than one V 9923B is being used to provide two link operation strap lead from first unit to EP2 lead of second unit Strap EP2 lead of first unit to lead of the second unit A maximum of two links is all that is possible OPERATION The code call unit is accessed by placing a telephone or a resistive short across T and R The unit will return dial tone to the calling party when it is ready to accept digits NOTE IN TWO LINK OPERATION DIAL TONE WILL BE WITHHELD FROM THE SECOND LINK UNTIL THE CODE CALL ON FIRST LINK IS ANSWERED TO PREVENT TWO CODES BEING BROADCAST SIMULTANEOUSLY The calling party then dials in a two or three digit number depending upon the position of dipswitch 1 on the code call unit After the last digit the code call unit begins to transmit tone via the TT and RT leads and the contact on the IN and OUT leads closes in conjunction with the tones The unit continues to broadcast the codes until it is released by the calling party going on hook or by someone answering the code call When the unit is being used by a PABX the ringing voltage on the TO and RO leads from the PABX station releases the code call unit and connects the PABX trunk access to PABX station answer If the unit is being used with 1A2 key telephones when the second
6. misuse or negligence after the original shipment 3 the product has not been altered in any way or repaired by others and that factory sealed units are unopened A service charge plus parts and labor will be applied to units defaced or physically damaged 4 freight charges for the return of products to Valcom are prepaid 5 all units out of warranty are subject to a service charge The service charge will cover minor repairs Major repairs will be subject to additional charges for parts and labor This warranty is in lieu of and excludes all other warranties expressed or implied and in no event shall Valcom Inc be liable for any anticipated profits consequential damage loss of time or other losses incurred by the buyer in connection with purchase operation or use of the product This warranty specifically excludes damage incurred in shipment In the event a product is received in damaged condition the carrier should be notified immediately Claims for such damage should be filed with the carrier involved in accordance with the point Headquarters In Canada Valcom Inc Corporation 5614 Hollins Road 35 Van Kirk Drive 11 and 12 Roanoke VA 24019 5056 Brampton Ontario L7A1A5 Phone 540 563 2000 Phone 905 456 1072 FAX 540 362 9800 FAX 905 456 2269 5 947923 PBX AND KEY SYSTEM INPUT ANALOG PBX ANSWER PORT SWITCHED RELAY OUTPUT TONE OUTPUT EXPANSION CIRCUIT POWER SUPPLY
7. party goes off hook on the code call button the combined voltage drop across the 10K Ohm resistors in the A leads releases the code call unit The code call unit is designed so that it will finish broadcasting a code before returning dial tone and resetting even if answered in the middle of the code call sequence Figure 9 is a simplified schematic illustrating the main control functions contained in the V 9923B TECHNICAL ASSISTANCE When trouble is reported verify power is being supplied to the unit and there are no broken connections Be sure the amphenol is secure in the back of the unit and the cable is terminated correctly on the crossconnect block Check voltages for proper polarity on crossconnect block If a spare unit is available continue to troubleshoot by substituting the spare unit for the suspected defective unit Assistance in troubleshooting is available from the factory When calling you should have a VOM a telephone test set and several clip leads available and be calling from the job site Call 540 563 2000 and ask for Technical Support or call 540 427 6000 for Valcom 24 hour Automated Support or visit our website at http www valcom com Valcom equipment is not field repairable Valcom Inc maintains service facilities in Roanoke VA Should repairs be necessary attach a tag to the unit clearly stating company name address phone number contact person and the nature of the problem Send the unit
8. PERVISION 4 _ RING FEED DETECTOR gt Ke K1 osc AND 40 TONE lt gt AMPLIFIER OUTPUT RT gt 15 36 SWITCHED V 9923B SIMPLIFIED SCHEMATIC TONE OR ROTARY LOGIC AND K1 N RELAY PULSE DECODING MEMORY L gt OUTPUT K1 LS LAMP SUPPLY 5 i K4 lt s l LAMP ON LINE BUT lt 57 INH INHIBIT EP1 A LEAD OF LINE BUT 47 TO NEXT EP2 V 9923B CONTROL 22 gt CIRCUIT AGND lt 1 lt BGND lt lt VOLT REG FIGURE 9 947923
9. ST OF KEY STRIP FIGURE 5 CONNECTION OF V 9923B TO KEY SYSTEM V 9923B PART OF CONNECTING BLOCK ROW B 10 Vac NOTE 1 LS OM 4 2 _ 22 AG GROUND AG 47 24 _BRV 48 BG GROUND VS 49 BB 24 50 NOTES 1 LS CONNECTED TO 10 Vac ONLY WHEN USING KEY TELEPHONE 2 IF SWITCHING OUTPUT IS BEING USED INSTEAD OF TONE OUTPUT STRAP IN LEAD TO OUTPUT TO BE SWITCHED IF TONE OUTPUT IS USED IN LEAD HAS NO CONNECTIONS FIGURE 6 POWER SUPPLY CONNECTIONS 7 947923 Diode 1N4003 or eq 4 BK BL OUT YY BL BK IN Relay Coil Portion of Connecting Block 16 DC Power Supply depends on relay requirements FIGURE 7 CONNECTIONS OF V 9923B FOR OPERATING A DC SLAVE RELAY SW OFF ON 1 TWO DIGIT THREE DIGIT OPERATION OPERATION 2 CODE NO CODE VERIFICATION VERIFICATION 3 MUST BE IN THE ON POSITION 4 FLASHING SOLID LAMP LAMP 2 DIGIT CODES 11 19 21 29 91 99 3 DIGIT CODES 111 119 121 129 999 991 OFF ON FIGURE 8 OPTION SWITCH SETTINGS TO PBX TRUNK OR SPARE LINE BUTTON ON TELEPHONE ACCESS T lt 5 297 TO ANALOG T a STATION OF RO PBX ANSWER 1 To SU
10. THAT WERE USED FOR PABX CONNECTION ARE NOT USED 947923 Power Connections The connections required to connect the V 9923B to a power supply are shown in Figure 6 Correct polarity must be observed for the unit to function properly Output Connections The V 9923B contains a tone generator and isolation transformer to allow direct hook up to the paging system amplifier The tones are applied to the output in the coded sequence dialed into the unit The tones appear on the TT BK S pin 29 and the RT S BK pin 30 leads If tones are not required as in the case of using claxton horns bells buzzers lamps etc a contact closure is available The contact is capable of handling 1 125 Vac or 2 amps 30 Vdc Higher current requirements should use the contact to operate a power relay which would switch the load The switched make contact input is the IN lead BL BK pin 22 and the out lead is the OUT lead BK BL pin 21 When the switched output of the V 9923B is used to operate a DC slave relay it is necessary to install a spike suppression diode in parallel with the coil of the relay Refer to Figure 7 for the appropriate connections Option Switches Four option switches are located through the back of the unit near the amphenol Switch sets either two or three digit operation Switch 2 allows or disallows the calling party to hear the tones as they are sent Switch 3 must be left in the ON position Switch 4
11. VSP V 9923B Issue 4 V 9923B CODE CALL UNIT INTRODUCTION This manual provides instructions for identification installation operation and technical assistance for the Valcom V 9923B Code Call Unit The V 9923B provides two or three digit code call paging via a loop start trunk port on a PABX or by the use of a spare line button on a key system The V 9923B code call unit complies with Part 68 of the FCC Rules and Regulations and has been granted FCC Registration BAFUSA 68753 KX N The ringer equivalence is 0 1B and the unit requires a USOC RJ21X connector In accordance with FCC Rules and applicable tariffs this code call unit may only be installed with the authorization of the owner of the host system The FCC Registration BAFUSA 68753 KX N will be listed in the affidavits filed with the telephone company it will also be recorded in the system log kept by installation and maintenance personnel The local telephone company is to be notified of the FCC registration number when this code call unit is installed SPECIFICATIONS The V 9923B is capable of providing code signaling for paging purposes it provides for meet me answer of code call and provides talk circuit and signaling tone Features e Trunk level access PABX s station level answer e Can be used with 1A2 type key systems 81 two digit codes or 729 three digit codes Uses rotary or tone dial signaling Table 1 Range Idle Operating A Ba
12. to Valcom Inc Repair and Return Dept 5614 Hollins Road Roanoke VA 24019 5056 947923 TABLE 3 TROUBLESHOOTING CHART PROBLEMS PROBABLE CAUSES AND SOLUTIONS No dial tone Verify power connections check operation of unit by placing test telephone across the T and R leads and going off hook If dial tone present check wiring to key system PABX If no dial tone check wiring of EP leads to other units Verify that all grounds are common Verify polarity of power connections Replace unit No tone output Remove leads on the TT and RT leads on crossconnect block Place call into the unit and verify with a telephone across TT and RT leads that tones are being broadcast Listen to unit to hear relay operating during code Unit doesn t answer Verify ringing voltage appearing across the TO and RO leads if using PABX or that A lead is dropping below half of supply voltage if using key telephone Unit cuts off on answer Reverse station leads on TO and RO VALCOM LIMITED WARRANTY Valcom Inc warrants its products to be free from defects in materials and workmanship under conditions of normal use and service for a period of one year from the date of shipment The obligation under this warranty shall be limited to the replacement repair or refund of any such defective device within the warranty period provided that 1 inspection by Valcom Inc indicates the validity of the claim 2 the defect is not the result of damage
13. ttery 21 5to 26Vde 65mA Dial tone to calling party Coded tone output for paging systems Switch controlled code verification tone Automatically discontinues code sending when answered e Capable of being used with another V 9923B to provide two link operation e Uses standard 1A2 key system voltages Mounts on the wall in a key cabinet or in the PABX Cabinet Capacity Each V 9923B Code Call Unit provides the necessary equipment for 1 link of code call For an additional link of code call another V 9923B is required two links maximum Dimensions 7 1 H x 5 9 W x 2 1 D 18 03cm H x 14 99 W x 5 33cm D Power Requirements The Valcom V 9923B requires 24 Vdc talk battery and 24 Vdc signal battery The current consumption and voltage range is shown in Table 1 B Battery 21 5 26 Vde 125mA Nominal Timing and Frequency 947923 Specifications The timing and frequency specifications of the Valcom V 9923B code call unit are shown in Table 2 Figure 1 is a timing chart showing the nominal timing of a code call Table 2 Dial Tone Frequency 180 Hz Coded Tone Frequency 550 Hz Time Tones Broadcast 370 ms Time between tones in a sequence 500 ms Time between digits in a sequence 1 5 sec Time between series of digits 8 sec The Valcom V 9923B will detect 20 30 Hz ringing on the answer port The applied ringing voltage should be 75 to 125 Vac gt lt _ 37 sec gt lt 50 sec
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