I do have a Cisco 2650XM with 2 E1s, one for incoming and the other for outgoing calls towards PSTN.
When I receive a phone call from the PSTN that reaches the Attendant Console Pilot Number, the Operator can talk with the caller. Once the Operator set the HOLD key on the IP Phone, 1st) there is no MOH stream towards the PSTN, and if the operator would like to UNHOLD the phone call, there is silence on both sides. when I see the codec displayed on the IP Phone, it is g.729.
Please help me to understand if this is a mismatch codec issue or something related to rounting?
I am using CCM 4.1.3
Thanks in advance for your Help