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Posted By: Iwatsu Guru NEC Sv9100 with AT&T Flex SIP Trunks - 08/08/22 01:44 PM
Has anyone been successful in getting the AT&T SIP trunks working on the SV9100 ?
I followed the NEC configuration guide for them but I can't get outbound calls to work, incoming is ok.
Posted By: Coral Tech Re: NEC Sv9100 with AT&T Flex SIP Trunks - 08/08/22 02:12 PM
Check your firewall. Wireshark off processor will tell you volumes where this is failing.
Posted By: Rickman Re: NEC Sv9100 with AT&T Flex SIP Trunks - 08/08/22 02:18 PM
Check if SIP ALG is turned on in your router. It will play hell with SIP trunks. If your trunks only work one way, your trunks are not registered.
Posted By: Iwatsu Guru Re: NEC Sv9100 with AT&T Flex SIP Trunks - 08/08/22 04:35 PM
I got them working but with one way audio.
almost there.
thanks for the input.
Posted By: Rickman Re: NEC Sv9100 with AT&T Flex SIP Trunks - 08/08/22 04:56 PM
MB84-26
Posted By: Iwatsu Guru Re: NEC Sv9100 with AT&T Flex SIP Trunks - 08/12/22 04:47 PM
Problem solved, AT&T had to NAT the NEC 84-26 IP address in their session border controller.
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