ISSUE: This issue arise when any user make a call to other lync user. In summary when there is a issue of INVITE message transaction. WHY? 488 Not Acceptable Here issue arise due to sdp misconstruction or for invalid sdp. Sending: INVITE sip:demouser@yy.com SIP/2.0 Via: SIP/2.0/TLS x.x.x.x:33360;branch=18n2L9K88eMlGn7CcctT9RwKSB1FebW397VI5uG1 From: <sip:test@xx.local>;tag=1375467581;epid=13754675 To: <sip:demouser@yy.com> Call-ID: BHQjMXffBDJ3cWfS4CAvb2wTByEnCZT2xxb7jecK CSeq: 1 INVITE Contact: <sip:test@xx.local;opaque=user:epid:DbsgHp_PWlGCoMke5u6QsgAA;gruu> Content-Type: application/sdp Max-Forwards: 70 Supported: ms-dialog-route-set-update Supported: timer Supported: histinfo Supported: ms-safe-transfer Supported: ms-sender Supported: ms-early-media Supported: 100rel Supported: replaces Supported: ms-conf-invite Ms-keep-alive: UAC;hop-hop=yes Accept-Language: en-US P-Preferred-Identity: sip:test@xx.local Allo...
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