Hi, There was this old problem with Snom 300 phones and forwarding to external numbers. To recap: there was a Snom 300 phone which was forwarded to an external number (a number reachable by a Cisco gateway). The call ended up in voicemail, instead of being forwarded.
Now I had a bit of time and investigated the case. There was one detail missing from the problem description: the Snom 300 was configured with two identities that connected to two proxies (i...@proxy1 and i...@proxy2). There is only one, common forwarding data, the external number (extnum) the phone is forwarded to and it is common for both identities. It turned out that the phone returns 302 response, with a Contact header set according to whichever identity is set on its UI. E.g. if id1 is selected on the UI, it will return ext...@proxy1, if id2 is selected, it will return ext...@proxy2. If the call is not originated from the domain of the proxy which is selected on the UI, the call runs to voicemail. E.g. if id1 is selected and a call originates from the domain of proxy1 (e.g. call...@proxy1), the call will be successfully forwarded to extnum. If, however, the call is originated from the domain of proxy2 (e.g. call...@proxy2), the phone will still return ext...@proxy1 (as id1 is selected on the UI that belongs to proxy1). As proxy2 cannot do anything with an address like ext...@proxy1, the call runs to voicemail. Moral of the story: don't use multiple identities with multiple proxies and call forwarding at the same time on Snom 300. :-/ Regards, Gabor -----Original Message----- From: Scott Lawrence [mailto:scott.lawre...@nortel.com] Sent: 18 March 2009 16:20 To: Gabor Paller Cc: Dale Worley; sipx-users@list.sipfoundry.org Subject: Re: [sipx-users] FW: Forwarding problem with Snom 300 On Wed, 2009-03-18 at 15:46 +0000, Gabor Paller wrote: > " Don't do forwarding on the phone -- configure sipX to do it." > > I would say that happily - sadly, users will do it. :-( ... and sadly it will not work. It may be possible to configure the phones to disable the ability to forward on the phone (it is on the Polycoms, and that's the default setup we create). There are a bunch of reasons why forwarding on phones creates problems. If you really want to bang your head on that wall, I wish you well, but be warned - all you'll end up with is either a dented wall or a dented head. It will cause lots of problems, and they can't all be fixed. _______________________________________________ sipx-users mailing list sipx-users@list.sipfoundry.org List Archive: http://list.sipfoundry.org/archive/sipx-users Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-users
