Help,
Background - we are a long time user of Switchvox, currently on Switchvox 5.8.5 with Polycom phones.
We are also a longtime user of Junction Networks VOIP for additional and 800 lines.
We are no longer able to connect to Junction Networks as we could in the past - since switching to AT&T for internet and phones (though we did connect for about 1 week).
We previously used Cox cable for internet access, along with Bellsouth for POTS lines - and have switched to AT&T - consolidating the POTS lines plus the internet access to one account.
We have used Junction for additional VOIP lines for at least 3 years without issue.
In Switchvox - we cannot connect to Junction Networks. Junction have told us they can see the incoming traffic, but when they return the response, we are not accepting the traffic back.
When we get Cisco involved for the firewall/router, they have said that their test shows that our Switchvox is sending out malformed packets.
When we talk to Switchvox - they tell us using their tool that their system is fine - and not returning malformed packets.
Subsequent to switching to AT&T - we initially could not connect - but then magically, we did make a connection for about a week -then it disconnected again and never did reconnect.
We have been working on this for weeks on and off - and have never been able to reconnect to Junction Networks.
Our internal tech engineer has even connected our Switchvox directly to the Internet using the AT&T device, getting it a public IP address - and it still will not connect.
When we run the SIP Provider Diagnosis in Switchvox, all tests pass except the last - "SIP Response of VOIP Provider Host Test" - which fails "Your voip provider...is not responding to SIP OPTIONS requests."
I would appreciate any advice on how to troubleshoot this type of issue. I honestly believe that AT&T is blocking something, but have no idea how to prove what might be getting blocked.
Thanks in advance!
Statistics : Posted by coecpa • on Tue Jun 17, 2014 7:29 pm • Replies 0 • Views 17