Additional maintenance procedures
Analog tie trunk back-to-back testing
Maintenance Procedures
385
December 2003
14
Place a call from one voice terminal to another voice terminal using the tie trunk ports assigned.
Dial TAC and extension. For example, if TAC of tie trunk group is 110 and station number is
5012, then dial 110 5012. If the call cannot be made, either one of these ports could be defective.
There are four ports on the TN760. Try different combinations to determine defective ports.
15
If there is a defective port on the circuit pack, try to switch to an unused port. If every port is
normally used, then replace the circuit pack.
16
Disconnect the jumpers between two ports. Then use administration terminal and trunk printouts
to restore every trunk-group change to normal values.
Table 90: Carrier lead appearances MDF
110 connecting
block terminals
CO Trunk TN747
Tie Trunk TN760
1
T1
T1
2
R1
R1
3
T11
4
R11
5
E1
6
M1
7
T2
T2
8
R2
R2
9
T12
10
R12
11
E2
12
M2
13
T3
T3
14
R3
R3
15
T13
16
R13
17
E3
18
M3
19
T4
T4
20
R4
R4
21
T14
22
R14
23
E4
24
M4
25
T5
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Содержание CMC1
Страница 1: ...Maintenance Procedures 555 245 103 Issue 1 1 December 2003 ...
Страница 14: ...Contents 14 Maintenance Procedures December 2003 ...
Страница 158: ...Server initialization recovery and resets System resets 158 Maintenance Procedures December 2003 ...
Страница 416: ...Additional maintenance procedures IP Telephones 416 Maintenance Procedures December 2003 ...
Страница 426: ...Index X 426 Maintenance Procedures December 2003 ...