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Mitel Forums => Mitel Software Applications => Topic started by: borogerson on August 14, 2021, 03:45:39 PM

Title: SIP Trunk Down
Post by: borogerson on August 14, 2021, 03:45:39 PM

I had to move the customers mitel services to a new data center and change IP's of all systems.   Everything looks good on the trunk config,  all my DNS tests work and we are able to receive calls but the PBX shows the trunk is out of service so I won't be able to make outbound calls.

PBX version is 7.0,  MBG Version is 9.2.

Title: Re: SIP Trunk Down
Post by: dilkie on August 14, 2021, 06:20:47 PM

did you change the sip proxy on mivb and fix up mbg's icp addresses?

Title: Re: SIP Trunk Down
Post by: borogerson on August 14, 2021, 10:02:33 PM

we are using host names and I can ping the host name from the PBX and get a DNS resolution and a reply to my ping

Title: Re: SIP Trunk Down
Post by: chrismitel on August 16, 2021, 05:32:20 AM

I have had issues before with option keepalives not being responded to or reaching.  Get a signalling trace off the MBG and take a look

Title: Re: SIP Trunk Down
Post by: dilkie on August 16, 2021, 08:54:37 AM

is the MBG being used as an internet gateway for other hosts, mivb and micollab, to reach the internet? there's a race condition in msl that can occur if one of those sends a sip packet before mbg can come up and send's it's OPTIONs (assume you have that enabled for the trunk).

Title: Re: SIP Trunk Down
Post by: johnp on August 17, 2021, 06:02:12 PM

I turn off the keep alive as I think the sip peer being peroxided should do the same. Dilkie correct me if I am wrong