Tag Archives: CUCM

Cisco CUCM 8861 / 8865 Wireless Configuration

The standard mode of operation is typically to wire your IP phone into the network lighting things up with wired Ethernet and PoE. In the case of the 8861 and the 8865 you have the option to disconnect the PoE, power up with a 48 volt power brick and take to the Wi-Fi air waves. Continue reading

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Cisco Mobile and Remote Access QR Code

If you have checked out the Cisco Spark Calling offering you may be familiar with the QR Code that is generated that can be used to register 8845 and 8865 phones to Spark. You simply hold the QR code in front of the phone and it’s read in and the phone registers. The Spark Calling QR code is a 16 digit number unique to Spark with a limited validity period for security. As an engineer I had wondered to myself why this functionality cannot be available with CUCM deployments as well. After all the phones run the same software… As … Continue reading

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Configure PLAR on SCCP and SIP Phones in CUCM

PLAR is a common feature often used for elevator or emergency phones in public areas. The idea is that when someone takes the phone off hook a call is immediately placed to someone who can help. It’s a critical configuration to get right and test before giving any stamp of approval. 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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