shijuwei@gmail.com

I have fixed the problem. It possibly caused by my firewall. BTW, it seems that WAS SIP proxy will route a INIVITE from X-Lite UA to Express Talk Basic (PPC Edition) via TCP. But the Express Talk in Mobile Device only opens the UDP 5070 listening port. I do not know whether Express Talk PPC Edition can work with TCP. Currently I can't initiate call via X-Lite --> WAS --> Express Talk (PPC). But I can successfully initiate calls via Express Talk (PPC) --> WAS --> X-Lite and Express Talk (PPC) --> WAS --> Express Talk (PPC).

I used Ethereal to capture SIP/UDP packets and found that there's no SIP request from the host of Express Talk arrives. Do not I configure the phone right?

I configured Express Talk base to use the SIP proxy in IBM WAS as the outbound proxy. But there's no reply from the server. Default Line Setting: Full 'Friendly' Display Name: Justin Server (SIP Proxy or Virtual PBX): 9.186.50.138:5060 SIP Number (or User Number): justin Here's the log of Network Setup Wizard: 09:55:40 Sip Port 5060 (UDP) opened OK 09:55:40 Local network IP is: 9.186.50.95 09:55:40 This computer connects to Internet directly 09:55:40 External IP is: 9.186.50.95 09:55:40 SIP Network Tool finished Here's the log of call initiating: 09:55:56 Restarting so settings take effect. 10:03:48 Initiated sip call to: bob@9.186.50.138 10:04:09 Error call attempt timed-out. 10:04:09 The server is not replying. 10:04:09 Call has disconnected Here's the SIP messeage trace: ---------------------------------------------------------------- 10:04:08 UDP Packet Sent to 9.186.50.138:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> INVITE sip:bob@9.186.50.138 SIP/2.0 Via: SIP/2.0/UDP 9.186.50.95:5060;rport;branch=z9hG4bK254352 To: <sip:bob@9.186.50.138> From: "Shi" <sip:jwshi@9.186.50.138:5060>;tag=3017 Call-ID: 1226476948-4352-T43-070508@9.186.50.95 CSeq: 735 INVITE Max-Forwards: 20 User-Agent: NCH Software Express Talk 3.10 Contact: <sip:jwshi@9.186.50.95:5060> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, INFO, REFER, NOTIFY Supported: replaces Content-Type: application/sdp Content-Length: 330 v=0 o=NCHSoftware-Talk 1226476999 1226477000 IN IP4 9.186.50.95 s=Express Talk Call c=IN IP4 9.186.50.95 t=0 0 m=audio 8000 RTP/AVP 0 8 96 3 13 101 a=rtpmap:0 PCMU/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:96 G726-32/8000 a=rtpmap:3 GSM/8000 a=rtpmap:13 CN/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=sendrecv ---------------------------------------------------------------- I configure X-Lite to do the same task, it works well. Thanks, Justin