Lucent Technologies Comcode 108678723 manual 93B network layer

DEFINITY ECS Release 8.2 ATM Installation,	Issue 1
Upgrades, and Administration 555-233-124	April 2000
6 Troubleshooting
Troubleshooting ATM-PNC	6-35

Q.93B (network) layer

Are connection requests being received by ATM switch call control?

NOTE:

If there is no connection between the TN2305/TN2306 circuit pack and the ATM switch at the Q.93B protocol layer, then no report displays.

1.Check the port of interest. If it is not configured for UNI signaling, then the port was administered for no UNI signaling. Verify that signaling is UNI3.1

2.The connect, setup, and release message counters should be a nonzero number if the ATM switch is handling Q.93B protocol layer messages sent by the PPN and EPN. They may not increase during troubleshooting unless calls are being made because the PPN initially sets up control connections to the PPN and then sets up talk path connections as needed.

3.Check to see if connections are being rejected. The error may be on the PPN port even though the EPN port is the one misbehaving and vice versa.

4.Type display errors and press Enter.

5.Set the Error List field to errors and Category field to PNC on the input screen (Screen 6-14) and press Enter to display any cause codes (see Table 6-11) returned from the ATM network to a TN2305/TN2306 circuit pack on the PPN (and to a TN2305/TN2306 circuit pack on an EPN). This is successful only if the links between the PPN and the EPN remain up so that the message from the EPN is logged.

See the ATM-EI maintenance object in one of the following books:

■DEFINITY Enterprise Communications Server Release 8 Maintenance for R8r