IAX trunk between Elastix 2.5 and FreePBX 13.0.190.19 Unable to negotiate codec

General Help
1

I’ve set up IAX trunks between two phone systems in two different buildings. It works one way, from the FreePBX box to the Elastix box, but when i call the other way I get an “All circuits are busy now” with HANGUPCAUSE=58. When i turn IAX2 debugging on, I see CAUSE: Unable to negotiate codec

Codec settings are the same on both sides:

Elastix IAX settings;

Trunk Name: BeavertonBradford

Peer Details:
context=from-internal
host=other PBX IP
username=IAXBeaverton
secret=secret
disallow=all
allow=g722&ulaw
type=peer
qualify=yes
trunk=yes

User Context: IAXBradford
secret=secret
type=user
context=from-internal

FreePBX settings:

Trunk Name: BeavertonBradford

Peer Details:
context=from-internal
host=other PBX IP
username=IAXBradford
secret=secret
disallow=all
allow=g722&ulaw
type=peer
qualify=yes
trunk=yes

User Context: IAXBeaverton

User Details:
type=user
secret=secret
context=from-internal

What settings can I change to get this working both directions?

Thank you,

Court

edited to rearrange peer details settings so they were in the same order in both.

2

Maybe add requirecalltoken=no

3

I added

requirecalltoken=no

to the Peer Details on both sides. No go.

4

If it’s the codec, try setting both ends to the same codec (uLaw being the obvious choice for licensing purposes). I know that we’ve seen problems with Asterisk “getting its heart set” on a codec and if it isn’t available, it just goes off in a snit.

5

I tried that. Since the call that works one way was using ulaw, I changed

allow=g722&ulaw

to
allow=ulaw

It didn’t seem to do anything.