Twilio SIP Trunk Failing with TLS

[keeb]

I have a Twilio SIP trunk configured and working for outbound calls. then I make these changes:

1. I activate secure trunking @ Twilio
2. Under the Twilio trunk options in 3CX:
   1. Change transport protocol to TLS
   2. Upload the Twilio SIP root certificate from https://www.twilio.com/docs/sip-trunking#securetrunking (https://www.twilio.com/resources/images/docs/cacert.pem)
   3. Select SRTP
   4. Save

Then I place a test call and the 3CX event log shows:
Call or Registration to +1<10 digit phone #>@(Ln.10000@Twilio) has failed. 0.0.0.0 replied: 503 Certificate Name Mismatch; warning: No other DNS entries to try (10,0); internal

At first I thought I'm missing an intermediate certificate, but Twilio doesn't provide one.

Any ideas?
Thank you

 

[telis]

Still don't see the need. I see the want, but not the need. There's no requirement (at least in the US as far as I'm aware) for encryption for voice traffic. There's several regulatory standards for data at rest, but nothing for voice in transit. Hence why I asked what the need was.

Why would you assume the need is regulatory? Confidentiality is a very common business requirement.