@jgiebler wrote:
Hello, I'm wondering if anybody out here has had a successful Secured SIP (TLS/SRTP) Integration with Twilio's Elastic SIP Trunks.
According to their website FreePBX is not "Qualified for Secure Trunking". (https://www.twilio.com/docs/api/sip-trunking/sample-configuration)
Our setup has been problematic on outbound dialing and inbound folks occasionally complains of "garbled" calls that can be cleared up by having caller call right back. Granted, the second issue may be QoS related.. though switch and FW are provisioned with QoS for SIP and RTP packets.
If you have a successful integration. Would you be willing to share your inbound/outbound trunk settings and what driver you are using (chan_sip/pjsip).
Below is what we are currently using.. however, for some unknown reason the outbound trunk will become "UNREACHABLE" seemingly randomly. And then just like it fell out, it will come back. We are not having this issue with our "non secure" (UDP) Twilio outbound trunks. This is happening on 2 different FreePBX setups behind 2 different firewalls (Meraki MX65 and SonicWall SOHO)
Information:
FreePBX version 13 (10.13.66-20)
FPBX-13.0.191.11(13.15.0)
Using chan_sip over port 5061
eSXi 6.0u3 Environment on Dell R710 host"Inbound" Trunk 1 (There are 8 of these.. 1 for each Twilio IP) host=54.172.60.0 type=peer context=from-trunk transport=tls encryption=yes "Outbound" Trunk username=*removed* type=peer transport=tls secret=*removed* qualify=yes host=*removed*.pstn.us2.twilio.com encryption=yes dtmfmode=rfc2833 disallow=all directmedia=no allow=ulaw
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