Windows messenger cannot do IM with SIP
- From: Prashant Agrawal <prashant@xxxxxxxxxxxxxxx>
- Date: Wed, 21 Sep 2005 13:54:48 +0800
Hi,
I am running Windows Messenger Clients V 5.1 (SIP Communications Service enabled) on etiher side of my SIP proxy. They can do presence, voice calls, whiteboard, application sharing, BUT cannot do Instant Messaging. I tried with few other SIP Proxies, but they too cannot do IM.
When I analyzed the network traffic, I found that the sender sends a SIP INVITE and the receiver sends a SIP OK in reply. But immediately, afterwards the receiver sends a SIP BYE message to terminate the dialog. Thus, the SIP MESSAGE message from the sender couldnt reach beyond the proxy as there was no corresponding active dialog.
I have no security issues as I have turned off EnableHighSecurity option. Also there are not NAT issues, as both the clients sit in the same network.
I observed this issue with WM 5.0 also but not with WM 4.7 as WM 4.7 doesnt send a SIP INVITE to initiate the dialog.
Please help.
-Prashant .
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