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Richard Mudgett fffb7babaf Implement T316 to allow RESTART messages to be automatically retransmitted. 
Q.931 defines the T316 timer to retransmit RESTART messages if a RESTART
ACKNOWLEDGE message is not received before the timer expires.  Q.931
defaults the time of T316 to 2 minutes with the default number of
consecutive RESTART failures as two.

* To support legacy behavior, the T316 timer is disabled by default.  It
is also disabled because the user cannot configure it to disabled if it is
enabled.

* The N316 count is created to allow the number of RESTART attempts to be
configurable.  Note you will need to recompile Asterisk to be able to
configure N316.

(issue ASTERISK-19608)
(issue AST-815)
(closes issue PRI-133)
Reported by: Mike Boylan
Tested by: rmudgett


git-svn-id: https://origsvn.digium.com/svn/libpri/branches/1.4@2288 2fbb986a-6c06-0410-b554-c9c1f0a7f128
2012-06-28 00:16:33 +00:00
build_tools Use the correct branch integrated property when generating the version string. 2009-03-13 01:05:54 +00:00
doc Fixes CC agents not automatically clearing if T309 clears the original call. 2010-10-21 18:00:03 +00:00
asn1_primitive.c Made ASN.1 memory dump also display printable characters. 2009-06-03 22:51:42 +00:00
asn1.h ROSE ASN.1 facility encode and decode rewrite of existing messages. 2009-04-21 22:08:45 +00:00
compat.h remove extraneous svn:executable properties 2005-11-29 18:39:18 +00:00
compiler.h Merged revisions 610 via svnmerge from 2008-08-05 22:18:12 +00:00
copy_string.c Merged revisions 610 via svnmerge from 2008-08-05 22:18:12 +00:00
libpri.h Implement T316 to allow RESTART messages to be automatically retransmitted. 2012-06-28 00:16:33 +00:00
LICENSE remove extraneous svn:executable properties 2005-11-29 18:39:18 +00:00
Makefile Enable LIBPRI_COUNTERS code by default. 2011-02-01 00:37:49 +00:00
pri_aoc.c Extract the layer 2 link structure out of struct pri. 2010-10-21 17:30:41 +00:00
pri_cc.c Make number not available presentation also set screening to network provided. 2012-03-23 19:35:23 +00:00
pri_facility.c Make number not available presentation also set screening to network provided. 2012-03-23 19:35:23 +00:00
pri_facility.h Add call transfer exchange of subaddresses support and fix PTMP call transfer signaling. 2010-12-21 16:49:30 +00:00
pri_internal.h Implement T316 to allow RESTART messages to be automatically retransmitted. 2012-06-28 00:16:33 +00:00
pri_q921.h Make PRI_DEBUG_Q921_RAW work independantly of PRI_DEBUG_Q921_DUMP 2012-02-03 23:12:57 +00:00
pri_q931.h Implement the mandatory T312 timer for NT PTMP broadcast SETUP calls. 2011-03-01 00:50:04 +00:00
pri.c Implement T316 to allow RESTART messages to be automatically retransmitted. 2012-06-28 00:16:33 +00:00
pridump.c Make PRI_DEBUG_Q921_RAW work independantly of PRI_DEBUG_Q921_DUMP 2012-02-03 23:12:57 +00:00
prisched.c Crash if NFAS swaps D channels on a call with an active timer. 2011-02-16 19:23:02 +00:00
pritest.c pritest hadn't been ported to DAHDI 2010-07-16 22:55:15 +00:00
q921.c Make PRI_DEBUG_Q921_RAW work independantly of PRI_DEBUG_Q921_DUMP 2012-02-03 23:12:57 +00:00
q931.c Implement T316 to allow RESTART messages to be automatically retransmitted. 2012-06-28 00:16:33 +00:00
README Merged revisions 311 via svnmerge from 2006-02-15 18:01:03 +00:00
rose_address.c ROSE ASN.1 facility encode and decode rewrite of existing messages. 2009-04-21 22:08:45 +00:00
rose_etsi_aoc.c ETSI Advice Of Charge (AOC) event reporting. 2010-05-28 18:03:38 +00:00
rose_etsi_cc.c Add Call Completion Suppplementary Service 2010-05-26 16:01:10 +00:00
rose_etsi_diversion.c Add COLP support to libpri for ETSI PTP, ETSI PTMP, and Q.SIG. 2009-08-18 23:53:32 +00:00
rose_etsi_ect.c Add COLP support to libpri for ETSI PTP, ETSI PTMP, and Q.SIG. 2009-08-18 23:53:32 +00:00
rose_etsi_mwi.c ETSI Message Waiting Indication (MWI) support. 2010-05-28 21:50:14 +00:00
rose_internal.h ETSI Message Waiting Indication (MWI) support. 2010-05-28 21:50:14 +00:00
rose_other.c ROSE ASN.1 facility encode and decode rewrite of existing messages. 2009-04-21 22:08:45 +00:00
rose_q931.c ROSE ASN.1 facility encode and decode rewrite of existing messages. 2009-04-21 22:08:45 +00:00
rose_qsig_aoc.c Added Q.SIG Advice-Of-Charge encode/decode routines. 2009-04-21 23:32:13 +00:00
rose_qsig_cc.c Add Call Completion Suppplementary Service 2010-05-26 16:01:10 +00:00
rose_qsig_ct.c ROSE ASN.1 facility encode and decode rewrite of existing messages. 2009-04-21 22:08:45 +00:00
rose_qsig_diversion.c Corrected standard document reference. 2009-08-07 15:53:20 +00:00
rose_qsig_mwi.c ETSI Message Waiting Indication (MWI) support. 2010-05-28 21:50:14 +00:00
rose_qsig_name.c Calling name not successfully processed on inbound QSIG PRI calls from Mitel PBX 2010-07-16 16:37:07 +00:00
rose.c DMS-100 not receiving caller name anymore. 2011-02-17 20:35:01 +00:00
rose.h ETSI Message Waiting Indication (MWI) support. 2010-05-28 21:50:14 +00:00
rosetest.c Add support to receive ECMA-164 2nd edition OID name ROSE messages. 2010-08-27 15:54:17 +00:00
testprilib.c Merged revisions 610 via svnmerge from 2008-08-05 22:18:12 +00:00
TODO More TODO updates 2006-02-16 19:21:30 +00:00

README 

libpri: An implementation of Primary Rate ISDN

Written by Mark Spencer <markster@digium.com>

What is libpri?
===============

libpri is a C implementation of the Primary Rate ISDN specification.  It was
based on the Bellcore specification SR-NWT-002343 for National ISDN.  As of
May 12, 2001, it has been tested work with NI-2, Nortel DMS-100, and 
Lucent 5E Custom protocols on switches from Nortel and Lucent.

What is the license for libpri?
===============================
libpri is distributed under the terms of the GNU General Public License, 
which permit its use and linking with other GPL'd software only.  
The GNU GPL is included in the file LICENSE in this directory.

As a special exception, libpri may also be linked to the OpenH323
library, so long as the entirity of the derivative work (as defined
within the GPL) is licensed either under the MPL of the OpenH323 license
or the GPL of libpri.

If you wish to use libpri in an application for which the GPL is not 
appropriate (e.g. a proprietary embedded system), licenses for libpri 
under more flexible terms can be readily obtained through Digium, Inc. 
at reasonable cost.


How do I report bugs or contribute?
===================================
For now, contact the author directly.  In the future if there is 
sufficient interest, we will setup a mailing list.

Does anything use this library so far?
======================================
Yes, the Asterisk Open Source PBX does.  http://www.asterisk.org

Also, the Zapata library has hooks for it.  http://www.zapatatelephony.org

Special thanks
==============
Special thanks to Jim Dixon <jim@lambdatel.com> for his help in 
testing and fixing the implementation.