SIP Trunk Fail Over Support

[saravanapandian]

PBX: MiVoice Office 250 Version: 6.3 SP2

I have the Mitel 250 configured and two registered SIP trunk and both trunks are working fine.

Can someone confirm the SIP configuration option for Failover trunk when the First trunk does not respond due to some reason?

I want the call should be routed to  trunk2 when trunk1 failed to respond.

Please respond if this feasible and revert if need more details required.

[Tech Electronics]

saravanapandian,

How do you have everything programmed for the 2 SIP Trunks? Are there two different SIP Peer Profiles? How are your Facility Groups setup?

As long as the system sees the SIP Peer Profile registered it will try to send calls out of it. How long are the Registrations Methods being sent between the MiVO 250 and the provider?

Thanks,

TE

[saravanapandian]

I have two trunk Groups under SIP peer.Trunk 1 name is 92002 and Trunk 2 name 92003.

I enabled registeration on both Trunk Groups

Please find the setting as part of registeration

Enable Registeration 5
Initial Retry Interval 50
Registeration Refresh Interval 300
Registeration IP Port 5100

Registerar IP will Diffrent for Both the Trunk Groups.I used MBG as SBC function since i used Route set IP is My LAN side IP (10.64.3.16)of SBC for Both the route sets.

Phones I configured
Outgoing Extension as 92002 and Emergency Extension 92003


I see 92002 is "TG not available" displayed on Phone as soon as dial 8 after putting 92002 as out of service, I assumed the call should route via 92003 but not happening

[DND ON]

Emergency extension? How did you reach that conclusion?

You could configure ARS to achieve this, but it's not 100% reliable on failover.

[Tech Electronics]

saravanapandian,

The Emergency extension is only used if the device dials the Emergency FAC [US: 911] or what is listed under System > Numbering Plan > Emergency > Emergency Numbers: [US: 8911].

This is not used for failover purposes if that is what you were led to believe.

The only way to get the system to try the second trunk group is via ARS and setting both trunk groups in the facility group in the order that you want them to be accessed. The issue you will have is if the system sees the first Trunk Group IN SERVICE then it will always send the call there until it is either OUT OF SERVICE or there are no more channels available to make calls out on it; BUSY.

Thanks,

TE