Thanks for your help. I have the following configuration: I have also changed the fax passthrough to Modem passthrough since the terminating GW is also Cisco.
voice service voip
modem passthrough nse codec g711ulaw redundancy maximum-sessions 10
network-clock-participate wic 0
network-clock-participate wic 1
network-clock-select 1 E1 0/1/0 "This E1 connects to the PSTN"
E1 0/0/0 connects to the PBX
Clocking for E1 0/0/0 is configured as internal.
E1 0/0/0 is up.
Applique type is Channelized E1 - balanced
Description: "Connection to Nortel PABX"
No alarms detected.
alarm-trigger is not set
Version info Firmware: 20071129, FPGA: 20, spm_count = 0
Framing is CRC4, Line Code is HDB3, Clock Source is Internal.
CRC Threshold is 320. Reported from firmware is 320.
Data in current interval (355 seconds elapsed):
2 Line Code Violations, 4 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 2 Line Err Secs, 0 Degraded Mins
2 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Total Data (last 24 hours)
148 Line Code Violations, 250 Path Code Violations,
0 Slip Secs, 0 Fr Loss Secs, 148 Line Err Secs, 0 Degraded Mins,
148 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
