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Hello, I have an Asterisk 13.6.0 PBX using PJSIP connected to the Twilio gateway. I am able to make calls outbound through the gateway, but I am not able to make calls into the PBX from external PSTN. Specifically, an incoming call is _received_ by Asterisk, but it is not able to route the call internally owing to the following error: [Feb 18 21:08:47] NOTICE[4606]: res_pjsip/pjsip_distributor.c:347 log_unidentified_request: Request from '< sip:+19725551212 at sillyapp.pstn.twilio.com;isup-oli=62;pstn-params=808481808882;cpc=ordina...

...; >> Hello, >> >> I have an Asterisk 13.6.0 PBX using PJSIP connected to the Twilio >> gateway. I am able to make calls outbound through the gateway, but I am not >> able to make calls into the PBX from external PSTN. >> >> Specifically, an incoming call is _received_ by Asterisk, but it is not >> able to route the call internally owing to the following error: >> >> [Feb 18 21:08:47] NOTICE[4606]: res_pjsip/pjsip_distributor.c:347 >> log_unidentified_request: Request from '< >> sip:+19725551212 at sillyapp.pstn.twilio.com;isu...