[asterisk-bugs] [Asterisk 0015128]: sometimes : dial_exec_full: Unable to create channel of type 'IAX2' (cause 20 - Unknown)

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
====================================================================== 
https://issues.asterisk.org/view.php?id=15128 
====================================================================== 
Reported By:                maziar
Assigned To:                dvossel
====================================================================== 
Project:                    Asterisk
Issue ID:                   15128
Category:                   Channels/chan_iax2
Reproducibility:            sometimes
Severity:                   major
Priority:                   normal
Status:                     feedback
Asterisk Version:           1.6.1.0 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
====================================================================== 
Date Submitted:             2009-05-16 00:24 CDT
Last Modified:              2009-07-25 10:54 CDT
====================================================================== 
Summary:                    sometimes : dial_exec_full: Unable to create channel
of type 'IAX2' (cause 20 - Unknown)
Description: 
Hi

i frequently i see this error after 5  to 20  try then many time ok and
some times
see this error : 

cli :
[May 16 09:35:53] WARNING[7523]: app_dial.c:1518 dial_exec_full: Unable to
create channel of type 'IAX2' (cause 20 - Unknown)
  == Everyone is busy/congested at this time (1:0/0/1)
    -- Executing [501 at default:3] Hangup("IAX2/172.16.20.80:4569-6738", "")
in new stack
  == Spawn extension (default, 501, 3) exited non-zero on
'IAX2/172.16.20.80:4569-6738'
    -- Hungup 'IAX2/172.16.20.80:4569-6738'


i use realtime for iax & sip

i have problem with 
qualify=yes and no


====================================================================== 

---------------------------------------------------------------------- 
 (0108217) maziar (reporter) - 2009-07-25 10:54
 https://issues.asterisk.org/view.php?id=15128#c108217 
---------------------------------------------------------------------- 
* Name       : 500
  Secret       : <Set>
  Context      : SFInternalL1
  Parking lot  :
  Mailbox      :
  Dynamic      : Yes
  Callerid     : "" <500>
  Expire       : -1
  ACL          : No
  Addr->IP     : (Unspecified) Port 0
  Defaddr->IP  : 0.0.0.0 Port 0
  Username     : 500
  Codecs       : 0x2 (gsm)
  Codec Order  : (gsm)
  Status       : Unmonitored
  Qualify      : every 60000ms when OK, every 10000ms when UNREACHABLE
(sample smoothing Off) 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2009-07-25 10:54 maziar         Note Added: 0108217                          
======================================================================