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Terence Luk: Lync Server 2013 and Avaya RCC integration logs the error: “Start-Line: SIP/2.0 481 Call Leg Does Not Exist”
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Terence Luk: Lync Server 2010 or 2013 IM (Instant Messaging) conference no longer works with RCC (Remote Call Control) configured with a PBX
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Terence Luk: Initiating an Enterprise Voice call with Lync Server 2013 configured with a SIP trunk to an Avaya PBX generates the error: "Gateway responded with 407 Proxy Authentication Required";component="MediationServer";SipResponseText="Not ...
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