TLS - call fails from tls to tls and udp to tls, tls to udp works

General Help
1

Hi all, Freepbx 12 asterisk 11.21
Remote phone with TLS (transport=all, TLS primary) registers with the phone system.
This phone is able to make calls to extensions that have transport=All, UDP primary. But, tls phone to another tls phone fails. Both have transport=all. TLS primary. Also, calls from other “all, UDP primary” extensions to this tls phone fails.

SIP error code given is 488 not acceptable here…
any ideas?

2

488 is usually given on codec mismatch. Check your codec lists on all the devices.

The other possibility of codec mismatch is AVP/SAVP (normal media or secured media). If an endpoint requires media encryption and the other party doesn’t support it, you might get a 488 as the rejection cause.

3

Media encryption is set to none for all extensions.

There are no codecs defined at the extension level. Allowed codecs in General sip settings is ulaw and g722.

4

The issue is resolved. There are 2 parameters in freepbx 12 for encryption…one is media encryption and the other is enable encryption… I just had to modify these settings to fix this…