IP Telephony and Phones

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Hi AllI I got always error while update COP.sgn file for frimware 9971 SIP "Error encountered: The selected file is not valid. Please ensure that the COP/ISO file is intended for this release. MD5 Hash with ver 9-4-2  - CUCM Ver 9.1.2 Is there any s...

Hi folks,We just bought a brand new 7821 Phone and wanted to test it internally in our labs.We´ve downloaded the COP file mentioned in the Release Notes (cmterm-78xx.10-1-1-9.cop.sgn), restarted TFTP Service, even restarted the Server, but there is s...

fodermat by Cisco Employee
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Hi, We encountered an issue where in we experienced a busy tone while dialling out. After we traced it, we found that the endpoint in CUCM was registered while the show mgcp endpoints for e1 in voice gateway were down. We have checked also that the ...