[asterisk-bugs] [Asterisk 0013405]: [patch] T38 gateway

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=13405 
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Reported By:                dafe_von_cetin
Assigned To:                
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Project:                    Asterisk
Issue ID:                   13405
Category:                   Applications/app_fax
Reproducibility:            N/A
Severity:                   feature
Priority:                   normal
Status:                     confirmed
Asterisk Version:           SVN 
JIRA:                       SWP-115 
Regression:                 No 
Reviewboard Link:           https://reviewboard.asterisk.org/r/459/ 
SVN Branch (only for SVN checkouts, not tarball releases):  trunk 
SVN Revision (number only!): 140548 
Request Review:              
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Date Submitted:             2008-08-30 16:44 CDT
Last Modified:              2010-03-13 10:37 CST
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Summary:                    [patch] T38 gateway
Description: 
Hi all,

I'm sending you patch containing new application app_faxgateway.c
("FaxGateway") which is able to mediate T30 to T38 and vice versa.
Feature is using spands library (I used spandsp-0.0.4pre18 and
spandsp-0.0.5pre4).

Best regards
Daniel.

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 (0119329) dalepbx (reporter) - 2010-03-13 10:37
 https://issues.asterisk.org/view.php?id=13405#c119329 
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Hi,

i have tested klaus3000's patch with 1.6.2.5  and the following setup:

HP LJ 3200m Fax <-fxs port-> Grandstream GXW4008 <-sip/t38-> Asterisk
(Digium TE121) <-PRI/ISDN-> Some Canon Fax

The HP Fax is infamous for being unreliable to a point to be considered
broken, even with pots pstn and 2 plain Fax machines. As we have far to
many of them deployed at my company, it would be great if this could be a
solid solution.

I get 10 pages transmitted correctly, but i receive a unsupported media
type warning (see below). Now i am unsure if FaxGateway() is even used. Can
someone please enlighten me on this?


 Using SIP RTP CoS mark 5
  == Using SIP VRTP CoS mark 6
    -- Executing [001234512345 at from-sip:1] FaxGateway("SIP/123-00000023",
"DAHDI/g0/01234512345") in new stack
    -- Requested transfer capability: 0x00 - SPEECH
    -- Accepting call from '+1234512345' to '12345' on channel 0/18, span
1
    -- Executing [12345 at from-pstn:1] FaxGateway("DAHDI/18-1", "SIP/123")
in new stack
  == Using SIP RTP CoS mark 5
  == Using SIP VRTP CoS mark 6
[Mar 13 17:08:19] WARNING[19692]: chan_sip.c:8300 process_sdp: Unsupported
SDP media type in offer: image 5012 udptl t38

< some time passes (and 10 pages are transmitted) >

 Auto fallthrough, channel 'DAHDI/18-1' status is 'Unknown'
    -- Hungup 'DAHDI/18-1'
    -- Channel 0/1, span 1 got hangup request, cause 16
    -- Channel 0/1, span 1 received AOC-E charging 2 units
    -- Hungup 'DAHDI/1-1' 

Issue History 
Date Modified    Username       Field                    Change               
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2010-03-13 10:37 dalepbx        Note Added: 0119329                          
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