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No ringing back tone

Mustafa.Taha
Level 1
Level 1

Hi everyone,

 

our CUCM works fine for inbound and outbound call and everyone call hear the ring and ring back tones , now the issue is when i forward the ip phone to PSTN number and i call the forwarded ip phone number i cant hear ring back tone, However the forwarded PSTN number is ringing and if he picks up the call is going normal and everything is fine.

 

 

1 Reply 1

Hi, How CUCM reach the PSTN? Is there a gateway? What type of PSTN access do you have? ISDN?

Please, add the config of PSTN gateway with a debug ccsip messages of problematic call.

 

Regards.