You need to use sipxbridge or use another SBC. AT&T is dropping the call because they don't support REFER. You need to follow the steps for configuring sipxbridge AND a sip trunk for AT&T, not an unmanaged gateway. ============================ Tony Graziano, Manager Telephone: 434.984.8430 Fax: 434.984.8431
Email: [email protected] LAN/Telephony/Security and Control Systems Helpdesk: Telephone: 434.984.8426 Fax: 434.984.8427 Helpdesk Contract Customers: http://www.myitdepartment.net/gethelp/ ----- Original Message ----- From: [email protected] <[email protected]> To: [email protected] <[email protected]> Sent: Tue Feb 16 05:04:27 2010 Subject: [sipx-users] Problem with transfers from external calls Good morning, Almost there with our system, but it appears that I have one issue to resolve. AT&T finally got around to putting in their IP Flex product and it works well except for transfers. The problem shows up in two places which seem like the same issue. First, when an outside call comes in to the AA I try either dial by name or dialing the extension. Both end up recognizing the tones, announce that I will be transferred, and then dead air. Phone to be transferred to never rings. Second is a DID call to a phone and that phone tries to transfer the call to another phone. Internal transfers work and transfers work when coming in from the copper lines using an AudioCodes MP-118 fxo gateway. Lay of the land.... Sipx is set as 172.21.210.10 and is using 4.0.4 Cisco 7604 router has three ports, WAN, LAN, SIP. While setting this up with AT&T it was my understanding that I should have an internal IP on the SIP port. We had them set it as 172.21.210.9. Seems to work except for this. We setup sipx to use an unmanaged gateway that points to the public IP AT&T gave us to connect to. Attached is a merged trace file that I have been looking at in sipviewer. Just wish I knew what I was looking for in this. The two lines that from a newbie perspective look like possible culprates are the "407 Proxy Authentication Required" and "408 Request timeout". Everything I have been reading points be back to REFER, but I am stuck. Any pointers or thoughts? BTW - sipviewer seems like a great debug tool! Andrew _______________________________________________ sipx-users mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipx-users Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-users sipXecs IP PBX -- http://www.sipfoundry.org/
