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vince
New Contributor

NV3140 SBC not failing over after error 500

Greetings, i'm trying to configure failover from T02 to T03

T02 and T03 point to two local SIP PBX (customer side). The call comes in from T01 which is provider side.

I didnt find my scenario in "Configuring SIP Trunk Failover in AOS.pdf" that would fit my needs.

The PBX at T02 will return error 500 if unavailable, and the NV3140 would need to failover to T03.

From what i read, only error 503 and 404 would trigger the failover.

I tried to configure T02 and T03 as independant trunk in same TG, and also tried to set T03's IP as a secondary IP to T02.

In both cases, the call wont try T03/Secondary IP when receiving error 500.

Is there a way to modify this behavior, or is there a work around (sip code remaping)?

!
voice trunk T02 type sip
description "SBC 1"
sip-server primary 1.1.1.1
registrar primary 1.1.1.1
domain "sipt.domain.com"
sip-keep-alive options 30
grammar request-uri host domain
grammar from host domain
grammar p-asserted-identity host domain
grammar to host domain
!
voice trunk T03 type sip
description "SBC 2"
sip-server primary 2.2.2.2
registrar primary 2.2.2.2
domain "sipt.domain.com"
sip-keep-alive options 30
grammar request-uri host domain
grammar from host domain
grammar p-asserted-identity host domain
grammar to host domain

voice grouped-trunk "TG SBC"
trunk T02
trunk T03
accept 999555000X cost 0

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