[asterisk-users] Help with iax.conf {tesco|freshtel} 1.6

[Brian]

I have something going on that I don't fully understand after a weekend
of looking for answers.

I have an iax account with Tesco that works flawlessly with the Zoiper
client - but is giving me trouble with inbound calls in Asterisk 1.6.
After some playing I have ended up with an iax.conf file that looks like
this:

[general]
calltokenoptional = 77.75.0.0/255.255.248.0
maxcallnumbers = 16382
port=4569
bandwidth=low
disallow=all
allow=alaw
allow=ulaw
allow=gsm
jitterbuffer=yes
tos=lowdelay
qualify=80
register => 012XXXXXXXX:PASSWORD at gateway.tescointernetphone.com

[012XXXXXXXX]
type=friend
requirecalltoken=no
context=from-iax
host=gateway.tescointernetphone.com
auth=rsa
username=012XXXXXXXX
secret=PASSWORD
qualify=yes

For testing I've tried various options in extensions.conf, but for the
time being have settled with:

exten => 012XXXXXXXX,1,NoOp(--- AIX-INBOUND-TESCO DEBUG ---)
exten => 012XXXXXXXX,2,Wait(10)
exten => 012XXXXXXXX,3,hangup


Looking at iax2 show peers I have:

Name/Username    Host                 Mask             Port
Status    
012XXXXXXXX/012  77.75.0.135     (S)  255.255.255.255  4569          OK
(56 ms)
1 iax2 peers [1 online, 0 offline, 0 unmonitored]

If I make an INBOUND call to the pstn number associated with this iax
provider, with debugging on I see the call, but it never goes to the
matching extension - it just rings out until I hang up:

Rx-Frame Retry[ No] -- OSeqno: 000 ISeqno: 000 Type: IAX     Subclass:
NEW    
   Timestamp: 00013ms  SCall: 00219  DCall: 00000 [77.75.0.135:4569]
   VERSION         : 2
   CALLED NUMBER   : 012XXXXXXXX
   CODEC_PREFS     : (ilbc|g729|alaw|ulaw|gsm)
   CALLING NUMBER  : Unavailable
   CALLING PRESNTN : 0
   CALLING TYPEOFN : 0
   CALLING TRANSIT : 0
   CALLING NAME    : Unavailable
   LANGUAGE        : en
   FORMAT          : 256
   CAPABILITY      : 58638
   ADSICPE         : 2
   DATE TIME       : 2010-02-08  09:04:54
Tx-Frame Retry[000] -- OSeqno: 000 ISeqno: 001 Type: IAX     Subclass:
AUTHREQ
   Timestamp: 00019ms  SCall: 00655  DCall: 00219 [77.75.0.135:4569]
   AUTHMETHODS     : 4
   CHALLENGE       : \x31\x31\munged
   USERNAME        : 012XXXXXXXX
Rx-Frame Retry[ No] -- OSeqno: 001 ISeqno: 001 Type: IAX     Subclass:
ACK    
   Timestamp: 00019ms  SCall: 00219  DCall: 00655 [77.75.0.135:4569]
Tx-Frame Retry[000] -- OSeqno: 000 ISeqno: 000 Type: IAX     Subclass:
REGREQ 
   Timestamp: 00003ms  SCall: 02774  DCall: 00000 [77.75.0.135:4569]
   USERNAME        : 012XXXXXXXX
   REFRESH         : 60
Rx-Frame Retry[ No] -- OSeqno: 000 ISeqno: 001 Type: IAX     Subclass:
REGACK 
   Timestamp: 00013ms  SCall: 00091  DCall: 02774 [77.75.0.135:4569]
   USERNAME        : 012XXXXXXXX
   DATE TIME       : 2010-02-08  09:05:00
   REFRESH         : 60
   APPARENT ADDRES : IPV4 x.x.x.x:4569
Tx-Frame Retry[-01] -- OSeqno: 001 ISeqno: 001 Type: IAX     Subclass:
ACK    
   Timestamp: 00013ms  SCall: 02774  DCall: 00091 [77.75.0.135:4569]
Rx-Frame Retry[ No] -- OSeqno: 001 ISeqno: 001 Type: IAX     Subclass:
HANGUP 
   Timestamp: 08647ms  SCall: 00219  DCall: 00655 [77.75.0.135:4569]
   CAUSE CODE      : 0

However, if I add this to the bottom of iax.conf:
[guest]
type=user
context=from-iax

It works ->
Rx-Frame Retry[ No] -- OSeqno: 000 ISeqno: 000 Type: IAX     Subclass:
NEW    
   Timestamp: 00018ms  SCall: 00423  DCall: 00000 [77.75.0.135:4569]
   VERSION         : 2
   CALLED NUMBER   : 012XXXXXXXX
   CODEC_PREFS     : (ilbc|g729|alaw|ulaw|gsm)
   CALLING NUMBER  : Unavailable
   CALLING PRESNTN : 0
   CALLING TYPEOFN : 0
   CALLING TRANSIT : 0
   CALLING NAME    : Unavailable
   LANGUAGE        : en
   FORMAT          : 256
   CAPABILITY      : 58638
   ADSICPE         : 2
   DATE TIME       : 2010-02-08  09:18:20

    -- Accepting UNAUTHENTICATED call from 77.75.0.135:
       > requested format = g729,
       > requested prefs = (ilbc|g729|alaw|ulaw|gsm),
       > actual format = alaw,
       > host prefs = (alaw|ulaw|gsm),
       > priority = mine
Tx-Frame Retry[000] -- OSeqno: 000 ISeqno: 001 Type: IAX     Subclass:
ACCEPT 
   Timestamp: 00016ms  SCall: 03340  DCall: 00423 [77.75.0.135:4569]
   FORMAT          : 8
stinger2*CLI> 
Rx-Frame Retry[ No] -- OSeqno: 001 ISeqno: 001 Type: IAX     Subclass:
ACK    
   Timestamp: 00016ms  SCall: 00423  DCall: 03340 [77.75.0.135:4569]
    -- Executing [012XXXXXXXX at from-iax:1] NoOp("IAX2/012XXXXXXXX-3340",
"--- AIX-INBOUND-TESCO DEBUG ---"  ) in new stack
 == Begin MixMonitor Recording IAX2/01256510343-3340
    -- Executing [01256510343 at from-iax:3] Wait("IAX2/01256510343-3340",
"1") in new stack
    -- Executing [01256510343 at from-iax:4] Dial("IAX2/01256510343-3340",
"SIP/5050,55,tr") in new stack

{snip}
I am guessing this is either an issue with this:

Accepting UNAUTHENTICATED call from 77.75.0.135:

Or is normal and I'm missing something here????