IP Telephony and Phones

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Hi Team,   One of my Cisco 8831 video conference phones is not registering. i updated the firmware to new one and this is an error is showing  Registration:UnregisteredIPv4 Address:<ip address removed>Active Load ID:sip8831.10-3-1SR3-5Download Status...

The question is:  does the same make/model router support a different number of phones if it is configured as simply a CUCME device versus configured as as SRST fallback device? Different Cisco documents seem to give different supported numbers - ind...

Hello Pros, I need to run a test call which needs to least at least 8 hours.  It looks like my SBC is terminâting the call after about 60 minutes by seding a Bye message. In CUCM the Max Call Duration is set to 720 mins but the call gets disconnected...