Our application uses the SIP Plugin to send a INVITE message to another SIP client. After successful registration, whenever an INVITE is sent to the remote client it invariably fails stating '488 Not Acceptable Here'. We have tried to define a new profile in the SIP settings as default profile and also changed the SIPAppcapabilities.xml and run the SIPClientinstaller.exe. It still fails. So Please help. SOS.

Regards,
Anupam