CUCM: Calling Search Space and Partition examples

This is a re-write of Understanding calling search space and partition, I attempt to simply it and give examples. Partition Partition is to group entities together. Entities are directory numbers, route pattern and translation pattern. Directory numbers are group together by assigning the route partition. Grouping entitles together does not restrict call flow, to restrict … Continue reading CUCM: Calling Search Space and Partition examples

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CUCM: Redundancy (Call processing failover)

Introduction The result of the Cisco IP phones failover to secondary or tertiary CUCM server is instantaneous in the point of view of enduser, if everything was configured correctly. The test was done with 13 registered devices, of course as the number of registered devices increase the recovery time may vary. Only SCCP and MGCP … Continue reading CUCM: Redundancy (Call processing failover)

CUCM & Unity Connection: Database backup with Disaster Recovery System

Doing backup is easy with the Disaster Recovery System that is included for both CUCM and Unity Connection. The pre-requisite is that you must have a SFTP server which you can download free from freeSSHd. The freeSSHd for Windows is quite easy to use. Configuring freeSSHd The freeSSHd resides under your taskbar. Disaster Recovery System: … Continue reading CUCM & Unity Connection: Database backup with Disaster Recovery System

CUCM: Understanding Partition and Calling Search Space (CSS)

From the cisco documentation: "Understanding and Using Partitions and Calling Search Spaces with Cisco CallManager", it says phones located in different partitions cannot call to each other, phones that reside within the same partition can call to each other. "Note: Any device that makes a call can explicitly reach any dial plan entry that is … Continue reading CUCM: Understanding Partition and Calling Search Space (CSS)

CUCM and Cisco Unity Connection: Calling internal line from external line

An external caller calls to your company and wants to look for a specific person by dialing the extension belonging to a person. Ensure CTI Manager service is turned on Go to Cisco Unified Serviceability. Create CTI Route point From CUCM, Device > CTI Route Point. Add attendant DN in the gateway The gateway used … Continue reading CUCM and Cisco Unity Connection: Calling internal line from external line

CUCM: Speed dial

Press a number from the keypad and call the extension/directory number. From CUCM, Device > Phone, Click "Add a new SD" under Association Information. From the phone, press the number and press Speedial softkey to ring the configured directory number.

CISCO VOICE GATEWAY: Registration to CUCM rejected

You have a voice gateway such as VG204, from CUCM 8.6 Device > Phone, you saw the newly configured VG204 Device Name (Port) status was rejected. Check on your VG204 to see if there is dial-peer for the port that is rejected by CUCM. show run | sec dial-peer To configure the dial-peer, supposed the … Continue reading CISCO VOICE GATEWAY: Registration to CUCM rejected