[asterisk-bugs] [Asterisk 0015452]: Unable to make ISDN PRI calls after upgrade.

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=15452 
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Reported By:                alecdavis
Assigned To:                
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Project:                    Asterisk
Issue ID:                   15452
Category:                   Channels/chan_dahdi
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
Asterisk Version:           SVN 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!): 203077 
Request Review:              
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Date Submitted:             2009-07-05 21:50 CDT
Last Modified:              2009-07-08 06:12 CDT
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Summary:                    Unable to make ISDN PRI calls after upgrade.
Description: 
After upgrade to SVN-trunk-r204919M from SVN-branch-1.6.2-r203077M we are
unable to make ISDN PRI calls.

reverting back to 1.6.2-r203077M with exactly same configs, works again.

Console output as attached files.

The difference is the extra "Ext: 1  DS1 Identifier: 0" that's not present
using older code.

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 (0107474) alecdavis (reporter) - 2009-07-08 06:12
 https://issues.asterisk.org/view.php?id=15452#c107474 
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An octet group is formed by using some extension mechanism. The preferred
extension mechanism is to extend an octet (N) through the next octet(s)
(Na, Nb, etc.) by using bit 8 in each octet as an extension bit. The bit
value "0" indicates that the octet continues through the next octet. The
bit value "1" indicates that this octet is the last octet. If one octet
(Nb) is present, also the preceding octets (N and Na) must be present.

In reading this, for the "channel identification" it suggests that octect
3 and it's extensions which currently are sent as;
 [18 04 e1 80 83 84]
should read
 [18 04 61 00 03 84] 

Issue History 
Date Modified    Username       Field                    Change               
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2009-07-08 06:12 alecdavis      Note Added: 0107474                          
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