If you are connecting a Cisco IP Phone that was already registered in CUCM, then the phone contacts the TFTP server and requests TFTP Server to provide IP Phone’s configuration file. The Cisco IP Phone will also learn firmware version that is required to function properly with the Cisco Unified Communications. Cisco IP phones will download this XML file via TFTP, will learn the IP address and Port to send SCCP ( Skinny Client Control Protocol) messages when attempting to register. When you connect a new IP Phone which was never registered to Cisco Unified Communications Manager and auto-registration is enabled, it will use a file called as.
As of now let’s see how to download or from Cisco Unified Communications Manager TFTP? I am sure most of you are aware of Cisco IP Phone Registration Process, however i am going to post the Registration process in next post. How to find and download list of files from CUCM?
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