[asterisk-users] IAX2 calls getting rejected without a CAUSE CODE. How to debug this?

[bruce bruce]

Hi Everyone,

I have two servers as the following that are trunked with each other via
IAX2 trunk:

Server A:
Asterisk 1.4.21.2 (Elastix Flavor)


Server B (IP # 72.72.72.72):
Asterisk 1.6.2.0 (Vanilla)

Server B can place calls to Server A but when trying to place calls from
Server A to Server B this is what I am getting:

----------------------------------------------------------------------------------------------------------------------------------------
pbx*CLI> originate iax2/mel/14161234567 extension s at null

Tx-Frame Retry[000] -- OSeqno: 000 ISeqno: 000 Type: IAX     Subclass: NEW

   Timestamp: 00003ms  SCall: 16389  DCall: 00000 [72.72.72.72:4569]
   VERSION         : 2
   CALLED NUMBER   : 14161234567
   CODEC_PREFS     : (gsm)
   CALLING NUMBER  :
   CALLING PRESNTN : 0
   CALLING TYPEOFN : 0
   CALLING TRANSIT : 0
   CALLING NAME    :
   LANGUAGE        : en
   USERNAME        : mel
   FORMAT          : 2
   CAPABILITY      : 57346
   ADSICPE         : 2
   DATE TIME       : 2010-09-02  02:14:50

Rx-Frame Retry[Yes] -- OSeqno: 000 ISeqno: 001 Type: IAX     Subclass:
REJECT
   Timestamp: 00003ms  SCall: 00001  DCall: 16389 [72.72.72.72:4569]
Tx-Frame Retry[-01] -- OSeqno: 001 ISeqno: 001 Type: IAX     Subclass: ACK

   Timestamp: 00003ms  SCall: 16389  DCall: 00001 [72.72.72.72:4569]
    -- Hungup 'IAX2/mel-16389'

----------------------------------------------------------------------------------------------------------------------------------------

As you can see above, Subclass: REJECT comes back wtih no cause code.
Usually there is a cause code to debug but in this case there is no Cause
code. Trunks on both sides in the context=from-internal so it's not an
Inbound Route issue.

Any pointers are much appreciated.

-Bruce
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