Cisco Ip Phone Downloading Xmldefault Cnf Xml Repack Free Jun 2026

The phone powers up via Power over Ethernet (PoE) or an external power adapter and negotiates a voice VLAN.

<Default> <!-- Defines the CUCM server(s) the phone will try to register with --> <callManagerGroup> <members> <!-- Priority 0 is the highest priority server --> <member priority="0"> <callManager> <ports> <ethernetPhonePort>2000</ethernetPhonePort> <!-- Other port configurations can be listed here --> </ports> <!-- IP address or hostname of your CUCM server --> <processNodeName>192.168.1.120</processNodeName> </callManager> </member> </members> </callManagerGroup> cisco ip phone downloading xmldefault cnf xml repack

Verify via a packet capture tool like Wireshark that the phone is requesting the correct MAC address format and that your TFTP root matches exactly. The phone powers up via Power over Ethernet

: The phone first requests SEP .cnf.xml from the TFTP server. Place it directly into the root TFTP directory

Place it directly into the root TFTP directory along with all the individual firmware files ( .bin , .loads , .sb2 , etc.) specified in the tag. Restart your TFTP service to clear any file caching. If you are using :

Understanding the Boot Process and the Role of xmldefault.cnf.xml

CUCM 12.5, 200 phones (mostly 8845). Symptom: Every morning at 8 AM, 30 phones reboot and fail to register, logs show "repack XMLDefault.cnf.xml". Investigation: TFTP server CPU was 100% due to a backup job running simultaneously. Root cause: TFTP service timed out while reading phone-specific files → served fallback → found default file outdated → repacked. Resolution: Rescheduled backup, increased TFTP cache timeout, and synced all configs. The repack messages disappeared.