leonmol

hmm, I was redirected here from SNOM web site so I thought you support SNOM phones too ...

Sure. See attached INVITE log anonym.txt

there is no ALG (don't see it anywhere in settings). the problem is that I cannot configure my SNOM to work with the IPComms trunk. The PBX does not send the INVITE message with the line parameter. I cannot change PBX settings because this is with the service provider. Interestingly, my CSIP softclient on the smartphone works just fine in the same network with the same provider including incoming calls. SNOM somehow behaves differently. Is it possible to disable the line parameter at all? I could not find it in RFC 3261 ... PS. Sorry, could not understand your recommendation about TLS/SIP - this is probably done on the PBX side.

well, there is a router and an ISP (fixed IP). the router has the relevant port forwarded to the SNOM telephone. Besides, it is used with another VOIP provider and everything works just fine. as to PBX, my telephone registers with the PBX with the line parameter. They can also send the OPTIONS command with the line parameter. However, the INVITE message always comes without the line parameter for some reason what is the line parameter used for?

Hi There I experience incoming call problems with SNOM 320 and IPComms VoIP service. I can make outgoing calls but cannot receive incoming calls. After some troubleshooting I determined that the server sends INVITE requests to the telephone without the line= parameter. Could someone advise what is the purpose of this uri parameter and whether it is possible to disable it? The contact tag looks like this: Contact:<sip:name@IP:port;line=ihsdmmnsd>; thanks a lot for advice