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intercluster SIP trunk: One way call working

jaheshkhan
Level 4
Level 4

last one year intercluster sip trunk was working without any issue. suddenly one side sip trunk showing down.

when checked it showing error code as local =1 and then later changed remote 503.

 

 

so i created new sip security profile and I gave 5560 as port number instead of 5060..then trunk started showing up both side. 

but the result was the same.

when im changing back 5060 then trunk started showing down on side

 

For example i have 2 independent cluster. Cluster CUCM A and CLUSTER CUCM B.

CLUSTER A CUCM sip trunk shows down as remote 503 code and status shows DOWN. but i can ping from this cucm A to CUCM B.

 

If im changing port of sIP security profile of CUCM B to 5560, then sip trunk in CUCM A shows UP status.

 

but if im making calls from phones of CUCM A  the results are same even thought trunks are UP. calls will disconnect immediately without any message as kukuku...

 

Any idea why its so. 

From cucm B i can make call to cucm A phones without any issue and sip trunk in CUCM B shows UP status.

 

 

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