Dear Friends, I have CUCM 11 and Cisco gateway at my organisation where I am trying to add a small asterisk call center.
I created a SIP trunk between CUCM and Asterisk 15.4 on Centos 7 and also did the same at the gateway. When I call from the PSTN to a dial-peer that is mapped to asterisk, the call goes through well and we each each other. However, when I call from asterisk to the PSTN, The call goes through but there is total silence. Same issue with asterisk-CUCM. When I call from the Call manager to asterisk, its fine but asterisk to cisco extension, there is no audio on answering the call. I have been perplexed by this scenario. I extensively read online, turned MTP on and off (at the sip trunk in CUCM), tried nat=yes and nat=no at asterisk side etc but no joy yet. Has anyone else experiences this and any pointers on how to have it resolved? Thank you so much. Timothy
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