IP Telephony and Phones

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I am very new to Cisco Voice, touching it for the first time ever.  So please be kind lol.Can someone tell me what is the purpose of these commands, do I need to add them in the router?  Also don't I need the "service mgcpapp" for 911 and 9911?What i...

ALIAOF_ by Level 6
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CUCM 8.8.1Due to sharing a SIP phone number (Avtec Radio console) with Cisco 7942- I need to setup a 'rollover' number so the Avtec can answer a second call (it cannot do so without a second DN).I'll give an example.Primary number:        3115 (calls...

hello everyone i have a customer want update CUCM from 7.1.5 to 9 and i have update it OK on a VMwarebut now they want use their MCS 7835 to run the CUCM 9.....now can i use USB device to install ? because the CUCM 9 ios is too big then DVD.....

bo liu by Level 4
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