Users unable to join Lync hosted conferences from Cisco Unified Communications Manager 8.5

In the past couple of months we have seen increase in DTMF issue relating to Cisco Call Manager v8.5 connecting to Lync Server 2010 (Lync). I worked on a few of these issues giving me an opportunity to dive deep into this integration. Cisco Unified Communication Manager (CUCM) v8.5 is supported with Lync Server 2010…

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Exchange 2010 co-existence Exchange 2007 Unified Messaging connected to Cisco Call Manager causes users to be prompted twice when calling in subscriber accessoutlook voice access

  Over the past few months we have seen an increase in number of interop cases with Exchange 2010 Unified Messaging (UM) and Cisco Call Manager 7.0 (Configuration Notes) and 8.0 (Configuration Notes) (CCM). In this article I am going to talk particularly about one case that has seen the most hits which has also…


Exchange 2010 SP1 Unified Messaging cannot transfer call to an extension

  There are a number of reasons that may lead to calls not being transferred correctly to extensions homed on gateways – Cisco Call Manager, Audio Codes, OCS\LYNC amongst others, one of them blogged by me here. In this blog I am going to talk about another issue we have seen with our customers.   ISSUE…

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