This is the NEWS for chan_ss7. This version is maintained by Anders Baekgaard (ab@dicea.dk).
Please send bug reports, feature requests etc. to chan_ss7@dicea.dk.

Specfication for version 1.2
 - Compatible with Asterisk 1.2.x, 1.4.x and 1.6.x.
 - MTP2 (Q.703) implementation
 - MTP3 (Q.704) implementation (subset).
 - ISUP (Q.76x) implementation (mostly complete).
 - Supports Dahdi/Zaptel compatible digital interfaces, e.g. Redfone, Sangoma, Digium
 - Facilities for MTP2 packet protocol analysis using e.g. wireshark/ethereal
 - Supports high call volumes
 - Supports multiple linksets with different DPCs
 - Supports linksets with multiple links.
 - Supports load sharing and MTP changeover.
 - Supports multiple hosts (cluster) configuration with load sharing and failover.
 - Flexible Dial command syntax for SS7 to allow routing to different linksets.


New in version 1.2.1
- Fix bug causing segmentation violation when using some cli commands

New in version 1.2
- Handling of UBA fixed.
- Compensation for problems with "resource temparily unavailable" when doing zaptel i/o.
- New config parameters for linkset: blockin and blockout. Sets initial blocking status for CICs.
- Hardware DTMF support (thanks to Sangoma).
- Dahdi and Asterisk 1.6.x support fixes.

New in version 1.1
- Fixed buffer overflows in config.c.
- Fixed loss of IDLE CICs.
- Fixed segmentation fault when using "combined" attribute for linksets.
- Fixed block/unblock of last cic not possible bug.
- Fixed handling of dial request supporting multiple audio formats.
- Support for STP signalling, see file ss7.conf.template.single-link for config.
- Jitter buffer handling (thanks to Martin Vít, sponsored by www.voipex.cz).
- H324M support (thanks to Klaus Darilion).
- Fixed a bug that could cause one-way audio in some cases where DTMF codes are sent.
- Fixed a bug where receive fifo is no longer being read.
- New configuration parameters for link, rxgain and txgain, specifies gain values.
- New configuration parameter for link, relaxdtmf, specifies whether to use relax dtmf.
- Fixed handling of timeout after received suspend message.
- Handling of Chinese SS7 variant: new variant config parameter for linksets (SS7 or CHINA)
  (Thanks to Lin Miao, lin.miao at domain openvox.cn).
- Fixes to SS7 variant handling.
- Fixed various mutex locking bugs
- The circuit group messages GRS, CGB and CGU are now substituted by a sequence of their
  single CIC counterpart when the configuration parameter grs is set to no for a linkset.
- Dahdi support (preliminary).
- Fixes to the non-group messages for GRS, CGB, CGU.
- FreeBSD support

New in verion 1.0.0
- Compatible with asterisk 1.2.x and 1.4.x.
- MTP stack placed in standalone executable.
- New loadshare config parameter for linksets (None, linkset, combined).
- New combined config parameter for linksets. Linksets having the same combined
  setting and having loadshare=combined share signalling channels.
- New auto_block config parameter for links. When set to yes, the CICs on that link
  are blocked when signalling on the link is lost.
- The schannel entry in link description in configuration file may specify remote MTP stack.
- PDU dump is now in PCAP format, suitable for wireshark.
- Lots and lots of clean ups and fixes.