[asterisk-bugs] [Asterisk 0011902]: Incoming Call with E&M signalling is not working properly. (AsteriskNow 1.4.9.)

[noreply at bugs.digium.com]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=11902 
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Reported By:                akimura
Assigned To:                
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Project:                    Asterisk
Issue ID:                   11902
Category:                   Channels/chan_zap
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
Asterisk Version:           Older 1.4 
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:             02-01-2008 12:12 CST
Last Modified:              02-01-2008 13:27 CST
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Summary:                    Incoming Call with E&M signalling is not working
properly. (AsteriskNow 1.4.9.)
Description: 
We have a TE220 card configured with E&M signalling on AsteriskNow 1.4.9.
Asterisk communicates via this signalling to a Adtran TA604 (an IAD). This
IAD exchanges MGCP messages with a switch where MGCP test lines are
provisioned.
             ______            ________            __________
            |      |          |        |    E&M   |          |
Cisco7960---|  Sw  |---MGCP---| Adtran |T1------T1| Asterisk |---SIP_Phone

  -->       |______|    -->   |________|    -->   |__________|   -->


When we try to place an incoming call to the SIP lines on Asterisk, and
error is occurring as following:

-- Starting simple switch on 'Zap/25-1'
[Feb  1 13:34:30] WARNING[4621]: chan_zap.c:5630 ss_thread: getdtmf on
channel 25: Success
-- Hungup 'Zap/25-1'
asterisk*CLI>

We saw that there was a bug for a similar problem, but specifically for
E&M Wink. For us E&M Wink also worked, but we do need to use E&M only.
(http://bugs.digium.com/view.php?id=10360)

Thank you

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---------------------------------------------------------------------- 
 akimura - 02-01-08 13:27  
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The picture that I have tried to draw was messed up. Trying to attach a
correct one just below:
             ______            ________            __________
            |      |          |        |    E&M   |          |
Cisco7960---|  Sw  |---MGCP---| Adtran |T1------T1| Asterisk |---SIP_Phone

  -->       |______|    -->   |________|    -->   |__________|   --> 

Issue History 
Date Modified   Username       Field                    Change               
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02-01-08 13:27  akimura        Note Added: 0081584                          
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