[asterisk-bugs] [Asterisk 0012024]: sending or receiving faxes thru ISDN will cause the system to slow down

[noreply at bugs.digium.com]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=12024 
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Reported By:                agx
Assigned To:                crich
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Project:                    Asterisk
Issue ID:                   12024
Category:                   Channels/chan_misdn
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     assigned
Asterisk Version:           1.4.17 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             02-19-2008 05:25 CST
Last Modified:              05-13-2008 04:57 CDT
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Summary:                    sending or receiving faxes thru ISDN will cause the
system to slow down
Description: 
When sending and receiving faxes from chan_misd using the following cards:
- HFCPI
- Digium 4 BRI
- Beronet 2 BRI or 4 BRI

thru a linksys PAP2T FXS connected to a fax machine the entire system
collapse and CPU reach high value this is because when the call is active a
message is generated for every ISDN packet (i suppose) that flood the
asterisk and system log and also causes high disk activity.

To avoid it i temporary commented out the offending line in channel mISDN
directory and this worked as temporary fix.

Perhaps some people from chan_misdn DEV team can watch what causes this
problem.

Always reproducible.
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---------------------------------------------------------------------- 
 picciuX - 05-13-08 04:57  
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only a suggestion: if you're using 'n' option, in mISDN dial string (when
sending through mISDN) or in 'misdn_set_opt' (when receiving from mISDN),
try removing it, and you should see the problem disappear.

Beside of this, don't know if there's a bug in mISDN or this is expected
behaviour. 

Issue History 
Date Modified   Username       Field                    Change               
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05-13-08 04:57  picciuX        Note Added: 0086768                          
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