Hi guys - I'm probably grabbing at straws but just wanted to check. Had a client today who is running an Avaya Phone system with SIP trunks. All of a sudden they couldn't make or receive calls today on arrival at the office. The phone system provider checked everything including with the SIP provider (2Talk) and couldn't see a cause. Nothing has changed with their Firewall in months and no-one played with patching or anything else to explain it.
We have a loan 4G router we use as a loaner for clients with outages so we took it out, hooked it up to the 2nd port on the Avaya and the phone people changed it so it was the default route and all their SIP trucks are up and working like a dream.
Just wondering if perhaps Spark might be doing something to disrupt SIP traffic in provisioning their own sip offerings or something.
I really can't think of any other reason that all of a sudden things would change - Its a Spark service on Enable Fibre in Christchurch.
I'll be upfront here- SIP is not my thing - I've dabbled but I don't do anything with SIP offerings for clients and leave it up to the "experts".
Its just that nothing has changed at the site for some time so there is really no explanation. I don't think its anything to do with the LAN or ports on the Avaya as they have a Site to Site vpn to an Auckland office with 2 or 3 SIP phones up there and they can make internal calls from the Digital phones patched to the avaya here to the Avaya SIP desk phones in Auckland so that kind of rules out it being a lan related issue.