switch => IAX2/bonomi - 10.10.24.2
switch => IAX2/frosinone - 10.100.100.18
switch => IAX2/terracina - 10.100.100.26
switch => IAX2/sora - 10.100.100.26

*** example of successful calls with other Asterisks ***

Asterisk Ready.
    -- Call accepted by 10.10.24.2 (format unknown)
    -- Call accepted by 10.100.100.18 (format unknown)
    -- Call accepted by 10.100.100.26 (format unknown)
    -- Executing Dial('IAX2/terracina/4909')
    -- Called terracina/4909
    -- Call accepted by 10.100.100.26 (format ulaw)
    -- Format for call is ulaw
    -- IAX2/terracina/13 is ringing
    -- IAX2/terracina/13 answered SIP/marco_home-92a9
    -- Hungup 'IAX2/terracina/13'
  == Spawn extension (md, 4909, 1) exited non-zero on 'SIP/marco_home-92a9'
    -- Call accepted by 10.100.100.22 (format unknown)
    -- Executing Hangup("SIP/marco_home-92a9", "") in new stack
  == Spawn extension (md, h, 1) exited non-zero on 'SIP/marco_home-92a9'
    -- Executing Dial('IAX2/frosinone/4907')
    -- Called frosinone/4907
    -- Call accepted by 10.100.100.18 (format ulaw)
    -- Format for call is ulaw
    -- IAX2/frosinone/16 is ringing
    -- IAX2/frosinone/16 answered SIP/marco_home-380a
    -- Hungup 'IAX2/frosinone/16'
  == Spawn extension (md, 4907, 1) exited non-zero on 'SIP/marco_home-380a'
    -- Executing Hangup("SIP/marco_home-380a", "") in new stack
  == Spawn extension (md, h, 1) exited non-zero on 'SIP/marco_home-380a'
    -- Executing Dial('IAX2/bonomi/4904')
    -- Called bonomi/4904
    -- Call accepted by 10.10.24.2 (format ulaw)
    -- Format for call is ulaw
    -- IAX2/bonomi/17 is ringing
    -- Hungup 'IAX2/bonomi/17'
  == Spawn extension (md, 4904, 1) exited non-zero on 'SIP/marco_home-9270'
    -- Executing Hangup("SIP/marco_home-9270", "") in new stack
  == Spawn extension (md, h, 1) exited non-zero on 'SIP/marco_home-9270'


*** extensions.conf ***

(...)
[interni_unicas_nopcx]
include => default
include => bonomi
include => frosinone
include => terracina
include => sora

[bonomi]
switch => IAX2/bonomi

[frosinone]
switch => IAX2/frosinone

[terracina]
switch => IAX2/terracina

[sora]
switch => IAX2/sora
(...)

*** IAX2 channels when asterisk freezes (10.10.24.2 is the first switched IAX trunk "bonomi") ***

quadri*CLI> iax2 show channels
Channel               Peer             Username    ID (Lo/Rem)  Seq (Tx/Rx)  Lag      Jitter  JitBuf  Format
(None)                10.10.24.2       (None)      00007/00002  00002/00002  00000ms  0000ms  0002ms  unknow

If I type "IAX2 show channels" doesn't appear any information
i.e.:
quadri*CLI> iax2 show channels
quadri*CLI>


*** messages ***
I've disabled ztdummy and zaptel module for debugging...


Sep  2 21:22:45 NOTICE[32268]: Removed default indication country 'it'
Sep  2 21:31:47 WARNING[32268]: Maximum retries exceeded on call 70ebcc22303670d0@192.168.0.70 for seqno 22595 (Non-critical Response)
(*** asterisk freeze than I restart ***)
Sep  2 21:45:19 WARNING[32603]: Unable to open pseudo channel for timing...  Sound may be choppy.
Sep  2 21:45:19 WARNING[32603]: Unable to open IAX timing interface: No such file or directory
Sep  2 21:45:20 NOTICE[32603]: H.323 [register] category contains no entries.
Sep  2 21:45:26 WARNING[32717]: Unable to open pseudo channel for timing...  Sound may be choppy.
Sep  2 21:45:26 WARNING[32717]: Unable to open IAX timing interface: No such file or directory
Sep  2 21:45:27 NOTICE[32717]: H.323 [register] category contains no entries.
Sep  2 21:49:05 NOTICE[32717]: Removed default indication country 'it'
Sep  2 21:57:48 WARNING[32717]: Call rejected by 10.10.24.2: No such context/extension
Sep  2 21:58:26 WARNING[32717]: Call rejected by 10.10.24.2: No such context/extension
Sep  2 22:07:25 WARNING[32717]: Maximum retries exceeded on call 075ac194d40554af@192.168.0.70 for seqno 15762 (Non-critical Response)
Sep  2 22:16:13 NOTICE[32717]: Unable to create channel of type 'SIP'
Sep  2 22:16:13 NOTICE[32717]: Unable to create channel of type 'SIP'
Sep  2 22:16:14 NOTICE[32717]: Unable to create channel of type 'SIP'
Sep  2 22:25:14 NOTICE[32717]: Peer 'sora' is now UNREACHABLE!
Sep  2 22:25:24 NOTICE[32717]: Peer 'sora' is now REACHABLE!
(*** asterisk freeze than I restart ***)
Sep  2 22:51:41 WARNING[32717]: OpenH323 channel driver is busy!
Sep  2 22:51:45 WARNING[885]: Unable to open pseudo channel for timing...  Sound may be choppy.
Sep  2 22:51:45 WARNING[885]: Unable to open IAX timing interface: No such file or directory
Sep  2 22:51:46 NOTICE[885]: H.323 [register] category contains no entries.
Sep  2 22:53:23 WARNING[1004]: Unable to open pseudo channel for timing...  Sound may be choppy.
Sep  2 22:53:23 WARNING[1004]: Unable to open IAX timing interface: No such file or directory
Sep  2 22:53:24 NOTICE[1004]: H.323 [register] category contains no entries.
Sep  3 08:56:55 NOTICE[1004]: Peer 'sap' is now TOO LAGGED (2183 ms)!
Sep  3 08:57:05 NOTICE[1004]: Peer 'sap' is now REACHABLE!
(*** asterisk freeze than I restart ***)
Sep  3 10:10:22 WARNING[4660]: Unable to open pseudo channel for timing...  Sound may be choppy.
Sep  3 10:10:22 WARNING[4660]: Unable to open IAX timing interface: No such file or directory
Sep  3 10:10:23 NOTICE[4660]: H.323 [register] category contains no entries.
Sep  3 10:11:18 NOTICE[4660]: Removed default indication country 'it'
Sep  3 10:15:22 NOTICE[4660]: Peer 'marco_home' is now UNREACHABLE!
Sep  3 10:17:10 NOTICE[4660]: Peer 'marco_home' is now REACHABLE!
Sep  3 10:34:23 NOTICE[4660]: Peer 'terracina' is now TOO LAGGED (2483 ms)!
Sep  3 10:34:23 NOTICE[4660]: Peer 'sora' is now TOO LAGGED (2484 ms)!
Sep  3 10:34:24 NOTICE[4660]: Peer 'frosinone' is now TOO LAGGED (2472 ms)!
Sep  3 10:34:33 NOTICE[4660]: Peer 'terracina' is now REACHABLE!
Sep  3 10:34:34 NOTICE[4660]: Peer 'sora' is now REACHABLE!
Sep  3 10:34:34 NOTICE[4660]: Peer 'frosinone' is now REACHABLE!
Sep  3 11:25:19 WARNING[4660]: Maximum retries exceeded on call 7bcb7056833687f0@192.168.0.70 for seqno 102 (Non-critical Request)
Sep  3 11:25:19 WARNING[4660]: Maximum retries exceeded on call 7bcb7056833687f0@192.168.0.70 for seqno 103 (Non-critical Request)
Sep  3 11:25:19 WARNING[4660]: Maximum retries exceeded on call f910149a47a3c245@192.168.0.70 for seqno 102 (Non-critical Request)
Sep  3 11:25:20 NOTICE[4660]: Peer 'marco_home' is now UNREACHABLE!
Sep  3 11:25:30 NOTICE[4660]: Peer 'marco_home' is now REACHABLE!

*** event-log ***

Sep  2 21:45:19 asterisk[32603]: Started Asterisk Event Logger
Sep  2 21:45:20 asterisk[32603]: Restarted Asterisk Event Logger
Sep  2 21:45:26 asterisk[32717]: Started Asterisk Event Logger
Sep  2 21:45:27 asterisk[32717]: Restarted Asterisk Event Logger
Sep  2 22:51:45 asterisk[885]: Started Asterisk Event Logger
Sep  2 22:51:46 asterisk[885]: Restarted Asterisk Event Logger
Sep  2 22:53:23 asterisk[1004]: Started Asterisk Event Logger
Sep  2 22:53:24 asterisk[1004]: Restarted Asterisk Event Logger
Sep  3 10:10:22 asterisk[4660]: Started Asterisk Event Logger
Sep  3 10:10:24 asterisk[4660]: Restarted Asterisk Event Logger


*** iax.conf ***

(...)
autokill=yes (is the problem here?)

[bonomi]
type=friend
context=trunk_bonomi
username=uni
auth=md5
secret=xxxxx
host=10.10.24.2
disallow=all
;allow=gsm
allow=ulaw
qualify=yes