DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Additional Maintenance Procedures
6-34Analog Tie Trunk Back-to-Back Testing
6
Analog Tie Trunk Back-to-Back Testing
The TN760 circuit pack can b e configured for b ack-to-back testing (also known
as connectivity testing ) by making translation and c ross-connect chang es. This
testing configuration allo ws for the connection of Tie Trunks back-to-back in the
same switch to verify the operation of Tie Trunk ports. The tests can b e
performed in either the E&M or simp lex modes. (Refer to

DEFINITY

Communications System Generic 1 and Gen eric 3 Installation and Test,

555-230-104, for instructions on how to make c onnections at the cross-connec t
field).

E&M Mode Test Procedure

1. At the administration terminal, enter list configuration trunks to
determine which por ts are assigned on the Tie Trunk circuit pack.
2. Enter display dialplan command to determine the Trunk Access Code
(TAC) format.
3. Enter display port xxx for all ports defined in Step 1. This display s the
trunk groups of which the p orts are members. See Chapter 5, ‘‘Alarms,
Errors, and Troubleshooting’’ for details of how to remove and replace port
circuit packs.
4. Insert the circuit pac k back into the slot.
5. Enter display trunk xxx p for each trunk group identified in Step 3. This
command disp lays the specified trunk g roup on the administration
terminal screen and prints a hard copy on the printer. Save this d ata for
later use.
6. Remove all members defined b y these ports from the trunk group(s) using
the change trunk xxx command.
7. Remove the Tie Trunk circuit pack from the carrier slot.
8. Set the dip (option) switch es for each of the two ports to be test ed on the
Tie Trunk circuit pack to “E&M mode” and “unprotected.”
9. Enter add trunk n to add a new (test) trunk group. Then enter information
for the following fields:
Group Type tie
TAC Use trunk access cod e obtained from dial
plan
Trunk Type (in/out) wink/wink
Port Assign two of the p orts from the tie trunk.
Mode E&M for both ports
Type Specify one port as t1 standard and other
port as t1 compatible.