Category Archives: Telephony

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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What is My Phone Number?

I know that sounds like a stupid question but I have heard it a lot over the years…  Particularly with cell phones that make it easy to just shoot your information to someone via email or Bluetooth.  There are many ways to find this seemingly obvious but easily forgotten bit of information but my personal favorite is dialing 1-800-444-4444.  This is some type of MCI auto attendant that reads back your calling number.  This works with individual lines such as a POTS (Plain Old Telephone Service) or cell phone.  If your phone is controlled by a corporate phone system your … Continue reading

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