IP Telephony and Phones

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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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Hi guys,recently i have configured the dot1x security feature on the cisco c3650x switches with IOS 15.2(1)E. But when I added voice vlan to the port, the ip phone can't register.My switch port configuration as below:interface GigabitEthernet0/47 swi...

I'm having an issue adding a 2nd PRI. I'm guessing it's something obvious and I'm hoping a fresh pair of eyes can pick out the issue.  The PRI on 0/0/0 works fine but the PRI on 0/0/1 continually flips between AWAITING_ESTABLISHMENT and TEI_ASSIGNED....