I have my Asterisk server all setup. But have an odd problem and hope someone here can help. I have a Polycom IP 300, a Grandstream GXP-2000, and an installation of X-Lite. They can each call each other just fine (extension-to-extension). I can also dial-in from the outside (via Broadvoice) and can leave and retrieve voicemails. When I set ANY of the extensions (clients mentioned above) to the default extension from the SIP provider, the phone rings and shows CID - BUT, when I answer the phone, there is no audio either way. I thought this was a firewall issue but the clients ring and I CAN leave and retrieve voicemail. My next assumption is that it is some codec issue. The Polycom defaults to G.711u. I've tried changing this to G.729AB - but there problem persisted. Any ideas? Thanks in advance. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20050602/f600ef01/attachment.htm
Garth Brown wrote:> I have my Asterisk server all setup. But have an odd problem and hope > someone here can help. > > I have a Polycom IP 300, a Grandstream GXP-2000, and an installation > of X-Lite. They can each call each other just fine > (extension-to-extension). I can also dial-in from the outside (via > Broadvoice) and can leave and retrieve voicemails. When I set ANY of > the extensions (clients mentioned above) to the default extension from > the SIP provider, the phone rings and shows CID ? BUT, when I answer > the phone, there is no audio either way. > > I thought this was a firewall issue but the clients ring and I CAN > leave and retrieve voicemail. My next assumption is that it is some > codec issue. The Polycom defaults to G.711u. I?ve tried changing this > to G.729AB ? but there problem persisted. > > Any ideas? Thanks in advance. >I recently got a Polycom IP 300 and am having a similiar problem. I normally use Cisco 7940's and 60's but decided to try a less expensive phone. On the same LAN, the 300 can make calls just fine, and check voicemail. If a Cisco phone calls the Polycom, the phone rings, but when answered there is no audio either direction. The codecs appear to match up between the phones. The * CLI shows the Polycom as registered fine, also. I'll keep you posted if I figure something out. Mark
Ok, it now seems to be a firewall issue. When I turn the FW completely off, the calls work just fine. I only had one opening in the FW (5060:udp). Is there another port/protocol that should also be open? -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20050603/520648ab/attachment.htm