Category Archives: Telephony

Dial-Peer Destination Balancing

Traditionally, VOIP dial peers follow a fairly limited creation process. You can match a single pattern and direct to a single destination…

…In IOS XE 3.11S and IOS 15.4(1)T a new concept of server groups was created. Continue reading

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CUCM Partitions and Calling Search Space Basics

To understand the Class of Control mechanisms in Cisco’s Unified Communications Manager it’s vital that you understand Partitions and Calling Search Spaces. There are a number of analogies that can be drawn to illustrate the concept. I personally have found the analogies more complicated than just a simple explanation. Continue reading

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Google Voice at Home without Asterisk

Looking to use Google voice at home as your traditional home phone service without using some crazy Asterisk hack? You may even be fed up with the complexity of Asterisk anyhow, particularly if a simple voice gateway is all you have been using it for. There is an answer to this and it comes in the form of an inexpensive device called the Obi. Continue reading

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Mitel Phone DHCP Configuration with Multiple VLANs

Typically it is always recommended to segregate VoIP traffic from your typical data traffic. Recently, however, I was part of a Mitel 3300 phone system installation that was taking a different course. The techs with the local phone company doing the installation were not familiar with this concept and wanted to actually statically address the phones as well. Not cool, scalable or best practice particularly as the network grows and changes. Continue reading

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