[Asterisk-Users] IAX <> IAX trunking... DP cache?

[Ian Blenke]

Ian Blenke wrote:
> Brian West wrote:
> 
>> I would use the latest CVS for one.  And try again.
> 
> 
> Unfortunately, I've tried numerous times to get a current CVS trunk 
> snapshot to talk to *anything*, to no avail. Even getting my Grandstream 
> phones to register with it was an apparent excersize in futility. 
> Dropping back to 0.4.0 *immediately* worked with the same configs.

Ok, I've managed to get my Grandstream phones working correctly. With 
G.711/ulaw and 8 voice frames per packet, they work fine. Until I 
hard-coded all negotiable codecs to ulaw/alaw and upped the default 
setting of 1 voice frame per packet, I was getting no voice. Joy.

Anyway, the BudgeTone 100's (1.0.3.78) are working fine with Asterisk 
now, using today's CVS snapshot.

Back to the problem at hand: I simply cannot get the IAX/IAX2 
registration to "work". Honestly, I'm a bit lost. I'm still getting the 
same errors:

   WARNING[14351]: File chan_iax.c, Line 4852 (find_cache): Unable to 
generate call for 'privatepbx:[privatepbx]@publicpbx/local'
   WARNING[14351]: File chan_iax.c, Line 4972 (iax_exists): Unable to 
make DP cache
   WARNING[14351]: File chan_iax.c, Line 4852 (find_cache): Unable to 
generate call for 'privatepbx:[privatepbx]@publicpbx/local'
   WARNING[14351]: File chan_iax.c, Line 4994 (iax_canmatch): Unable to 
make DP cache

along with an apparent Registration Refused:

   NOTICE[9226]: File chan_iax2.c, Line 4341 (socket_read): Registration 
of 'privatepbx' rejected: Registration Refused

on the Public PBX box, I'm getting the following:

   NOTICE[7176]: File chan_iax2.c, Line 2860 (register_verify): Host 
privatepbx failed RSA authentication with inkeys 'privatepbx'

Now this is the weird part, I can start asterisk with -i or run "init 
keys" and the keys appear to load just fine:

     PrivatePBX

	*CLI> show keys
	Key Name   Type    Status   Sum
	privatepbx PUBLIC  [Loaded] 7ace809ae1c70b1bf4e50586f2d228e9
	privatepbx PRIVATE [Loaded] 4288d8b63dd77228ac9a9ceebba335c8
	publicpbx  PUBLIC  [Loaded] 115599073563eec2fd3cfc5e1891ed27
	iaxtel     PUBLIC  [Loaded] d919b3ef03eb4dc54c8fee86bfeeada1

     PrivatePBX

	*CLI> show keys
	Key Name   Type    Status   Sum
	publicpbx  PUBLIC  [Loaded] 115599073563eec2fd3cfc5e1891ed27
	publicpbx  PRIVATE [Loaded] b2b4484bbd90e93ac8e17a05251b561d
	iaxtel     PUBLIC  [Loaded] d919b3ef03eb4dc54c8fee86bfeeada1
	publicpbx  PUBLIC  [Loaded] 7ace809ae1c70b1bf4e50586f2d228e9

also, the initial IAX registration appears to work!

     PrivatePBX

	*CLI> iax show registry
	Host         Username    Perceived    Refresh  State
	x.x.x.x:5036 privatepbx  y.y.y.y:5036 60       Registered

	*CLI> iax2 show registry
	Host         Username    Perceived    Refresh  State
	x.x.x.x:4569 privatepbx  y.y.y.y:4569 60       Registered

but here's the weird part: if I check back on these registrations 
periodically, I will see IAX or IAX2 as Rejected, apparently randomly:

	*CLI> iax show registry
	Host         Username    Perceived    Refresh  State
	x.x.x.x:5036 privatepbx  y.y.y.y:5036 60       Registered

	*CLI> iax2 show registry
	Host         Username    Perceived    Refresh  State
	x.x.x.x:5036 privatepbx  y.y.y.y:5036 60       Rejected

On the other side, I see the registration:

     PublicPBX
	
	*CLI> iax show peers
	Name/Username Host        Mask             Port      Status
	privatepbx    y.y.y.y (D) 255.255.255.255  5036      Unmonitored

Gah. In debug mode, I see initial REGREJ messages often when I reload, 
yet if I wait a bit, I seem to see REJACK messages after a while - but 
nothing deterministic.

   Tx-Frame Retry[000] -- Seqno: 01  Type: IAX     Subclass: REGREQ
    Timestamp: 00066ms  Callno: 00014  DCall: 00193 [x.x.x.x:5036]
   Rx-Frame Retry[N/A] -- Seqno: 01  Type: IAX     Subclass: ACK
    Timestamp: 00066ms  Callno: 00193  DCall: 00014 [x.x.x.x:5036]
   Rx-Frame Retry[N/A] -- Seqno: 01  Type: IAX     Subclass: REGREJ
    Timestamp: 00045ms  Callno: 00193  DCall: 00014 [x.x.x.x:5036]

and then a few frames later:

   Rx-Frame Retry[No] -- OSeqno: 001 ISeqno: 002 Type: IAX Subclass: REGACK
    Timestamp: 00061ms  SCall: 00004  DCall: 00001 [66.152.21.108:4569]
    USERNAME        : privatepbx
    REFRESH         : 60
    APPARENT ADDRES : IPV4 y.y.y.y:4569

I'm slowly beginning to study these IAX frames to decypher their meanings...

This is my current setup, perhaps you can point out what I'm doing wrong 
(the same diagram from my earlier email stands):

     PrivatePBX

	;iax.conf:
	[general]
	; This appears to work.
	register => privatepbx:[privatepbx]@publicpbx

	;extension.conf:
	[local]
	; Neither of these seem to work.
	switch => IAX2/privatepbx:[privatepbx]@publicpbx/local
	;switch => IAX/privatepbx:[privatepbx]@publicpbx/local
				

     PublicPBX

	;iax.conf:
	[privatepbx]
	type=friend
	host=dynamic
	context=default
	auth=rsa
	;trunk=yes  ; <-- still can't use without zap timing
	inkeys=privatepbx
	outkeys=publicpbx
	qualify=yes     ; Make sure this peer is alive

	;extension.conf:
	[default]
	switch => IAX2/publicpbx:[publicpbx]@privatepbx/default

The idea is to have all publicpbx inbound calls get forwarded from 
[default] there to [default] on privatepbx. Likewise, all privatepbx 
outbound calls get forwarded from [local] there through the [local] 
contect on publicpbx.

When do you use the switch directive? Is this my entire problem?

-- 
- Ian C. Blenke <icblenke at nks.net>
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