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…


Remote Call Control in Office Communications Server R2 uses UPDATE method to maintain persistent sessions between Communicator 2007 R2 and CSTA Gateway

  For most of the administrators who have ran into issues with RCC my colleagues blog has been a great help. With the evolution of OCS and the SIP standard, there have been two changes in the behavior since the time Rajesh put that blog out. Hopefully this blog with help you look out for…

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