Ip 500 8.1 With Gamma SIP

[kuldeep72]

Hi guys does anyone have a sample config for using the new gamma sip which requires authentication on ip and not username password. I have tried setting this up but my IP500 keeps sending out the local ip office ip instead of the external ip for authentication resulting in one way speech. Any help would be appreciated.

Thanks

 

[IPmonkey]

Are you using Stun settings in network topology? as this sounds like a stun server problem.

 

[eddiebullman]

I had Gamma sip trunks working on 8.0 with username and password authentication as well as Voiceflex sips trunks with username and password authentication.
And this was all working ok until I graded to 8.1 the Gamma sip trunks stopped working for outgoing call but incoming calls are fine
Voiceflex calls were not affected by the upgrade incoming and outgoing fine
When I did the upgrade no other program changes were made to the config
But if I roll the system back 8.0 the Gamma trunks start working fine for both incoming and outgoing
So you may have fun trying to get Gamma sip trunks working on 8.1
I am still waiting for a call back from tech support about this one

 

[kuldeep72]

Hi Guys, I havnt used a stun server and havnt done so before. I can get incoming calls hitting the IP500 but then only one way speech and Gamma say this is due to me sending out the IP500 local ip and not the external ip. I was just wondering if someone had an example config they know works so I can just compare it.

Cheers

 

[amriddle01]

The system can't send an address it doesn't know, most provides use SBC's to get around this issue, I don't think Gamma have these and so maybe you should try using STUN, there are enough posts on here to help with STUN if you search