[asterisk-bugs] [Asterisk 0017689]: FAXOPT(modem)=V27, V29 does not have an effect on spandsp, fax still get received with V17

[Asterisk Bug Tracker]

The following issue has been CLOSED 
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https://issues.asterisk.org/view.php?id=17689 
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Reported By:                vrban
Assigned To:                
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Project:                    Asterisk
Issue ID:                   17689
Category:                   Resources/res_fax_spandsp
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     closed
Asterisk Version:           SVN 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases):  trunk 
SVN Revision (number only!): 278690 
Request Review:              
Resolution:                 no change required
Fixed in Version:           
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Date Submitted:             2010-07-22 14:39 CDT
Last Modified:              2010-07-22 23:45 CDT
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Summary:                    FAXOPT(modem)=V27,V29 does not have an effect on
spandsp, fax still get received with V17
Description: 
I set:
FAXOPT(modem)=V27,V29
FAXOPT(maxrate)=9600
FAXOPT(minrate)=2400
FAXOPT(ecm)=yes
ReceiveFAX("SIP/1xx.xx.xx.xx-00000001", "/tmp/fax-1279827012.1.tif")

But:
FAXBITRATE: 14400 and V.17 modem are used by spandsp

with res_fax_digium it is working
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 (0124889) tilghman (administrator) - 2010-07-22 23:45
 https://issues.asterisk.org/view.php?id=17689#c124889 
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Please read:

http://www.soft-switch.org/spandsp_faq/ar01s04.html

In short, Digium provides support for these fax standards which are still
under patent and includes licensing for those standards.  Spandsp does not. 

Issue History 
Date Modified    Username       Field                    Change               
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2010-07-22 23:45 tilghman       Note Added: 0124889                          
2010-07-22 23:45 tilghman       Status                   new => closed       
2010-07-22 23:45 tilghman       Resolution               open => no change
required
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