SMG BRI Daemon - BRI Protocol stack

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Author: David Yat Sin <dyatsin@sangoma.com>
Copyright (c) 2007-2008 Sangoma Technologies Inc.
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* Tue Feb 23 2010 David Yat Sin <dyatsin@sangoma.com> - 2.21
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- Support for boost version 103

* Thu May 07 2009 David Yat Sin <david.yatsin@sangoma.com> - 2.06
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- Fix for segfault on invalid ACU_DIGIT_IN

* Thu Apr 30 2009 David Yat Sin <david.yatsin@sangoma.com> - 2.05
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- Fix for segfault on incoming ACU_DIGIT_IN

* Fri Apr 24 2009 David Yat Sin <david.yatsin@sangoma.com> - 2.04
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- Fix for segfault on outgoing call with invalid trunkgroup

* Fri Apr 17 2009 David Yat Sin <david.yatsin@sangoma.com> - 2.03
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- Removed FD restart on socket timeout

* Fri Apr 10 2009 David Yat Sin <david.yatsin@sangoma.com> - 2.02
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- Improvements in PHY layer implementation

* Thu Apr 09 2009 David Yat Sin <david.yatsin@sangoma.com> - 2.01
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- Compiled vs sigboost version 100
- Support for Sangoma MGD restart procedure
- Major internal changes

* Tue Nov 02 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.59
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- Fix for smg_brid crashing if ACU_DIGIT_IN is received with size < 1

* Mon Oct 27 2008 David Yat Sin <dyatsin@sangoma.com> - 1.58-beta
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- Support for per channel round robin 

* Wed Sep 24 2008 David Yat Sin <dyatsin@sangoma.com> - 1.57-beta
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- Fix for crash when single span is used and all spans are in 
- physical disconnected state. Introduced in 1.56-beta

* Wed Sep 11 2008 David Yat Sin <dyatsin@sangoma.com> - 1.56-beta
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- Support for Round-Robin (ascending/descending) and Sequential
- huntgroups.

* Mon Aug 18 2008 David Yat Sin <dyatsin@sangoma.com> - 1.55-beta
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- Support for additional DL parameters T200, T203 Timers.
- Support for PH transmit timeout parameter.

* Mon Aug 11 2008 David Yat Sin <dyatsin@sangoma.com> - 1.54-beta
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- Support for all Netbricks NS timers.
- Minor improvements to BRI logging (full_capture).

* Mon Jul 28 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.53-beta
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- Support for separate logger thread

* Mon Jul 28 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.52-beta
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- Fix for ACU_ALERT_RQ not sent on call_start_ack, introduced in 1.51
- release

* Mon Jul 28 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.51-beta
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- Updated version

* Fri Jul 25 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.50-beta
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- ALERT msg send on CALL_START_ACK
- dl_always_up enabled by default on NT mode

* Wed Jul 23 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.49-beta
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- Incoming OOB digits are queued if in TRANSPARENT_RCV mode

* Mon Jul 21 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.48-beta
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- Support for Timer T300 configuration
- Support for ignore_oob_digits options

* Wed Jul 17 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.47-beta
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- Support for ACU_INFO_IN keypad pass-through to Asterisk

* Wed Jul 17 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.46-beta
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- Support for ACU_DIGIT_IN pass-through to Asterisk

* Wed Jul 16 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.45
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- Fix for issue when call is answered on CALL_START_ACK, changed to
- call answer on CALL_ANSWERED.

* Wed Jul 08 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.44
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- v1.43-beta renamed as v1.44  stable

* Wed Jul 04 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.43-beta
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- Support for test start option 

* Wed Jun 25 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.42-beta
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- Support for logging to non-syslog

* Thu Jun 16 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.40
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- Fix for some of the release codes not being passed to sangoma_mgd

* Thu May 15 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.39b
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- Fix for smg_brid causing segfaults on some systems on incoming OOB
- alarms

* Mon April 30 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.39
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- Fix for RDNIS not cleared

* Wed April 16 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.38
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- Support for show_spans and show_calls.

* Tues April 15 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.37
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- Added support for multiple MSNs.

* Mon April 14 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.36
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- Added support for timer_t3 and timer_t302
- Changed boost_msg.cpp to use shared path for all SMG-BRI messages
- Minor changes: Increased verbosity level for some informational
- messages

* Mon April 05 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.35d
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- Fix for TEI not being re-negotiated on PHY disconnect.


* Mon April 03 2008 David Yat Sin <david.yatsin@sangoma.com> - 1.35
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- First stable release. 



