DMTF

Doug Makes Telephony Fun: Making Microsoft Unified Communications solutions less daunting since 2009.

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  • Blog Post: Audio Conferencing with PSTN Attendees Prior to a Leader Joining

    The on-premise conferencing capability in Office Communications Server allows you to invite anonymous participants. These anonymous participants shouldn’t be allowed to have a meeting all by themselves, though. At least one authenticated enterprise user is required to be in the meeting. With data...
  • Blog Post: The Director Component in OCS: Traffic Flow, Authentication, and Use Cases

    Over the years, I’ve seen a number of different discussions about the directors, what they do, how they behave, and when we should use them. This post summarizes what I believe to be the salient points concerning the director component . Hopefully, this will serve to clarify rather than confuse. One...
  • Blog Post: Communicator Automatic Configuration and Split-Brain DNS

    A lot has been written about the way that Microsoft Office Communicator uses DNS to automatically discover a registration point for a given SIP URI. I won’t repeat all of that here. But, I do want to emphasize one of the unique constraints that Communicator places on the DNS SRV records it uses. For...
  • Blog Post: Phone Numbers and Dial Plans in Office Communications Server

    I’ve seen various customers that were building OCS dial plans that did not comply with our recommendation to follow RFC 3966 . Some of these customers had problems while I was engaged with them. All the rest will have problems later. Note: RFC 3966 is the standard related to specifying a “tel”...
  • Blog Post: The Mysteriously Changing Conference ID

    A new feature in Office Communications Server 2007 R2 is PSTN dial-in to audio conferences. (OCS 2007 had audio conferencing. It just didn’t have an attendant to which you could dial-in, provide a conference ID, and be placed in the right conference.) The most important features of a traditional reservationless...
  • Blog Post: Outbound PSTN Calling from an OCS Response Group

    The new Response Group Service in Office Communications Server 2007 R2 is a neat solution that provides inbound call routing to available agents. In terms of features, it sits somewhere between the hunt group offered on your PBX and a full contact center ACD . It’s pretty simple to setup initially and...