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Troubleshooting

Statistics

Summary: TCIV

 Activity Statistics 

aid in analyzing traffic and in troubleshooting. Statistics are kept in

RAM at the following Location Codes which may be read and/or reset using the #98 function

described in the 

Programming Section. 

Statistics may also be accessed by the Statistics

Function of the Architectural and Diagnostic Program. When the system is powered-up, the
Statistics Location Codes contain large “garbage” numbers which must be set to zero using the
#98 function before any signifigance  can be assigned to their values. The available statistics
arc:

57344 Number of resets by the reset pushbutton, serial port, and watchdog timer.

57346 Number of lines becoming active because of pressing a call button, going off-hook without

being called, or incoming call on a trunk.

57348

57350

57352

57354

57356

57358

57360

57362

57364

57366

57368

Number  of completed Administrative calls.

Number of DIA/DlSA  incoming calls.

Number of AAI/DIL incoming calls reccivcd.

Number of call-ins.

Number of outgoing interconnect calls.

Maximum number of links in use at any one time since the last initialization. This number
changes whenever the number of links in use exceeds the number already stored.

Maximum number of active lines or physical numbers at any given time (64 is the maximum

allowed). A line or physical number is active when providing an audio path to another line or
speaker. It is also active while a ground or resistor load is connected to the call-in terminal.
There is a serious fault when the number stored here reaches 64. One such fault may be an

improperly set call-in sensitivity pot, RP2 on the MIO. If RP2 is not properly set, it may appear
to the CPU that all 5 12 stations are attempting to place simultaneous call-ins.

Number of Receiver faults: Number of times administrative  phones have picked up,

waited for dial tone, and hung up without receiving it. A single phone can generate several
counts here by cycling the hook switch several times at a time when both receivers are busy
elsewhere.

Number of Console Interface Adapter resets. The console interface adapter can be reset
by a special command from the main program when a communication or response problem is
dctectcd. A large number in this statistic may indicate: intermittent or noisy wiring; or faulty
components in either the Console or the interface module.

Number of Console Data Faults. The console sends a mixture  of numerical data and com-
mands to the TCIV which recognizes non-numeric characters as commands. This counter
increments any time characters are received which are unknown to the TCIV. These unknown
characters are discarded along with the preceding numeric data and considered data faults.

Number of Lost Console  Commands: In case the TCIV main program happens to be slow
in responding to a connect request from the console (the line may be busy) the console
support program may discard new console input for a brief period, causing the operator 

to

have to repeat a keystroke. This is a count of the number of characters discarded.

 1989   Corporation (Orig. 10/88;  Rev. l/89)

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Summary of Contents for Telecenter IV

Page 1: ...ll Not Program 16 Phone Won t Ring 17 Time Tones Do Not Work 17 All Page Problem 17 Phone Rings back Upon Hanging up 18 System Misdials or Won t Allow Access Intermittent 18 Talk Path Noisy or Dead In...

Page 2: ...ne connected to a link To avoid this problem reset the system after performing this diagnostic GENERAL PROCEDURES Step 1 Dial 73 on a display phone The display will ask for a Physical Number When the...

Page 3: ...ar HT Hook switch H and Call in switch T status for the Subject line This field will display some combination of two characters from the following lists e g R H Hook switch status character will be ei...

Page 4: ...hone and its receiver will be disconnected from it and reconnected to the test link 5 6 Turn off the speaker relay Disconnect the single link staff phone relay This will disconnect the specified singl...

Page 5: ...5 seconds on and 5 seconds off can be obtained for performing audio measurements or listening tests The tone is available to the test phone or any phone in the link with it Little display interaction...

Page 6: ...ors 12 13 14 15 16 17 and 19 The least significant four bits measured on con ductors 19 20 18 21 Pin 18 is at binary position 2 represent the LLM circuit number 0 to 15 The remaining bits represent th...

Page 7: ...he link and return to the test phone link Caution Do not press 4 again it will disconnect the specified line from the trunk and the call in progress will be cut off Trunk idle Dial tone is received at...

Page 8: ...audible at the test phone If there is no audio a ground or activated privacy switch may be present Press 5 and verify the V goes off and the supervisory beep discontinues If this doesn t happen anoth...

Page 9: ...iately press 4 to disconnect from the link and return to the test phone link Press 7 or to go to the next physical number and return to Step 1 to continue testing Caution Do not press 4 again the spec...

Page 10: ...hones A and B by pressing 4 on the test phone or reset the system Call in Switches The main program detects the status of each call in switch as a function of its relationship to ground This enables t...

Page 11: ...the MIO Monitor the test phone receiver for a clear tone while adjusting RP2 located at the front of the MI0 near the CPU flat cable in the following manner Slowly turn RP2 counter clockwise until th...

Page 12: ...16 times the time period specified in Step 2 i e if Step 2 value is 120 this period is 32 seconds Note During this time period the system is making and breaking the connection between the two phones...

Page 13: ...ng checklist Baud rate Jumper setting on TCIV CPU Com Port Serial Port COMl COM2 etc 8 bit no parity Full Duplex Input characters are displayed when returned from the TCIV Step 3 Test the program by c...

Page 14: ...ode 64100 which is FA64 in hexidecimal notation to zero enter FA64 0 0 Display the byte from the reference address and increment the address Halt the TCIV program Location Code 64100 must have been se...

Page 15: ...are connected disconnected with which receiver and if tones are produced what they are It also reports Call Control Console keystrokes Turn on the function by adding 8 192 to the Receiver Time Limit...

Page 16: ...12 Vdc and 5 Vdc A short from 5 volts to ground can be caused by a shorted over voltage protection diode Dl on the CPU This diode protects 5 volt components on the CPU from damage by 12 volts in case...

Page 17: ...tep 3 If the tone activates check the master clock and ensure it activates input by going lower than 6 vdc for 5 sec If more than one zone make sure the master clock activates all necessary zones at t...

Page 18: ...d Intermittent Step 1 Use 75 diagnostic and test all 16 links in system using a touch key to send a tone Defects with particular links can be further categorized as follows Defect on one line only Sus...

Page 19: ...ttributes for DIL instead of AAI False Call ins After All Call or Time Tones step 1 Check the amplifier gain adjustment If too high the amplifier will clip the signal and cause this symptom Step 2 Che...

Page 20: ...fers This is accomplished in two phases First the TAP function ensures that the person attempting to transfer a call does not lose it by breaking the loop for too long Second that hanging up on one ca...

Page 21: ...ep 1 Connect one end of a 100 ohm 2 watt resistor to one of the 12 Vdc M terminals on the MIO Step 2 Connect an 18 AWG wire between the other end of the resistor and a good ground such as a cold water...

Page 22: ...pt to use the line and verify it is locked out Note This lockout will not work if the line has a defect that allows it to respond to incorrect physical number addressing Link Lockout Step 1 Refer to t...

Page 23: ...or load is connected to the call in terminal There is a serious fault when the number stored here reaches 64 One such fault may be an improperly set call in sensitivity pot RP2 on the MIO If RP2 is no...

Page 24: ...f 15 ma and should be sufficient for detection by the line hybrid causing the TCIV to connect the line to a link for dial tone sending and receiving If Step 3 was successful verify a digital low on th...

Page 25: ...t press any tone buttons on the line being rebalanced as this would result in abnormal d c and damage the accuracy of the rebalancing Measure the tone level from terminal T to ground Vt and the voltag...

Page 26: ...Line Balancing Set up Part of LLM Circuit r 71 12vDC T Listening Rl R2 1OOK Matched within 1...

Page 27: ...value in Location Code 57364 again If Location Code 57364 is still set at 0 the interface board is working Step 6 Turn TCIV Power Off Step 7 Place the J3 jumper back to the NORMAL position remove the...

Page 28: ...call in terminal of the speaker Check the wiring for a short to ground or other problem Check the DIP switch setting of the Speaker Control Boards serving the problem speaker and single link staff ph...

Page 29: ...OA terminals CT and CR Other Less than 2 Vdc indicates a central office time out fault Disconnect for 2 seconds to get 48 Vdc back See Special Notes on Central Office Trunks under the Line Type Tests...

Page 30: ...2 Physical number of line to ring after DIL AAI timeout 64224 TC44OO Audio physical number of hardware TCIV line 64226 TC4400 Trunk Lines physical numbers 64228 TC4400 Attendant software TCIV lines 64...

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