I have been using the SIP-Communicator to test for the robustness of some software, but I found out that SIP-Communicator do not handle rejected calls from other SIP Clients properly. Although SIP-Communicator had received the rejecting SIP messages, on the application it still carry on calling, where the other clients have already ended the call. Clients which SIP-Communicator unable to recieve rejected calls include Windows Messenger & Ekiga.
What I have notice is that under the "To:" from the messages recieve, the SIP tags from these two clients are quite long. Whereas for other clients (Wengo Phone, X-lite) with shorter SIP tags seems to be able to reject without problems. Hope you guys and fix this and that this infomation is enough to help solve the issue.
Soh Yew Cheong
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