Symptom
Problem:
Hunting for second line/port is not done by trunkgroup if the first port is down
Symptoms:
Outgoing calls through the BRI fail due to the highest preference port (as per hunt-scheme) is down. Due to this problem, if the highest preference port is down, the GW will not hunt for next port.
Conditions
1. BRI ports configured on GW.
2. BRI + trungroup configuration.
Scenario
========
# Trunk group configured as follows
trunkgroup test
hunt-scheme sequential both up
!
# trunkgroup is now applied on BRI serial interface 0/0/0 and 0/0/1:
interface BRI0/0/0
trunk-group test
!
interface BRI0/0/1
trunk-group test
!
# At this point, if the interface 0/0/1 is shut, then the BRI interface 0/0/0 is not chosen for call routing itself.
Workaround
Tested workarounds
=============
1. Use the following trunkgroup configuration:
trunk group LOCAL-PSTN
hunt-scheme round-robin both
!
This way the GW will always look for a random port for the call to egress.
There will be some call-failures but the call will definitely work on redial.
2. Configure separate dial-peers (without using trunk-group):
dial-peer voice 1 pots
port 0/0/0:0
preference 0
no huntstop
!
dial-peer voice 2 pots
port 0/0/0:1
preference 1
no huntstop
!
Further Problem Description
