Doug Makes Telephony Fun: Making Microsoft Unified Communications solutions less daunting since 2009.
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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...
12 Aug 2009
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”...
25 Jun 2009
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...
12 Jun 2009
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...
26 Apr 2009
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...
13 Apr 2009
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...
11 Apr 2009
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