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cucm wont send or receive voice through working sip trunk

baselzind
Frequent Contributor
Frequent Contributor

i have a cucm 11.5 which is connected through two sip trunks to two cucm of the same version through site to site vpn, the sip trunk is up and i can call them and receive calls , recently when i call them i cant hear them and they cant hear me , but when they call ,me the call is fine? the exact same problem is happening with the two sites im connected through sip trunk

2 Replies 2

Dennis Mink
Advisor
Advisor
This is most likely a routing issue. If your cube is flow through. Your cube will need to be able to route to all phones and vice versa. Also if you have a fw in the path allow rtp from cube to all voice subnets
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baselzind
Frequent Contributor
Frequent Contributor
no there is no cube in use , i have a direct sip trunk with the other cucm , the calls get answered but there is no voice , plus the sip trunk from my side keep going up and down
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