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

    Doug Lawty
    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...
    on 12 Apr 2009

  • Blog Post: The Director Component in OCS: Traffic Flow, Authentication, and Use Cases

    Doug Lawty
    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...
    on 26 Apr 2009

  • Blog Post: Communicator Automatic Configuration and Split-Brain DNS

    Doug Lawty
    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...
    on 13 Jun 2009

  • Blog Post: Phone Numbers and Dial Plans in Office Communications Server

    Doug Lawty
    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”...
    on 25 Jun 2009

  • Blog Post: The Mysteriously Changing Conference ID

    Doug Lawty
    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...
    on 14 Apr 2009

  • Blog Post: Outbound PSTN Calling from an OCS Response Group

    Doug Lawty
    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...
    on 13 Aug 2009