02-21-2017 12:02 PM - edited 03-17-2019 09:36 AM
Hi Everyone,
i have 2 problems about cisco 7821
1) Many 7821 phone doesn't register to cucm and i'm trying to register via 3g line
2) Some 7821 phone give a notice "network unavailable"
03-06-2017 01:58 AM
i found the solution it must be 1416 mtu size on gw
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