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Hi All,My 2811 sip gateway send invite to my ITSP server with incorrect IP address in Contact section. It uses the internal ip address instead of using the public ip. As results, the re-invite sent back from ITSP sip server cannot be recieve. Could s...
Hi Dave,You are on the spot. I have a range of 10 DID numbers, only one is registered with ITSP server, the rest are using IP authentication. This is because the 2811 can only allow one DID to register with sip server via sip-ua. If you know a way ca...
Hi David,Thanks for your replay.The Netgear does support SIP ALG. But when I enable it, incoming calls stop working. I get engage tone. As soon as disable SIP ALG, it working again. Any thoughts on this?Thanks again!Jason
Hi, can someone help on this. I am having the same issue. A SIP phone can transfer to a skinny phone, but a skinny phone cannot transfer a call to a sip phone. however skinny phone can call directly no problem.The IOS I am using is 12.4(15)T1.
