This is the NEWS for chan_ss7. This version is maintained by Anders Baekgaard (ab@netfors.com). Please send bug reports, feature requests etc. to chan_ss7@netfors.com. Specfication for version 2.4.7 - Compatible with Asterisk 1.4.x, 1.6.x, 1.8.x, 11.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, Openvox - Facilities for MTP2 packet protocol analysis using e.g. wireshark/ethereal - Supports high call volumes - Supports multiple linksets with different OPCs/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 2.4.7 - Fixed socket connection to mtp3d to have short timeout (works for "No route to host" cases) - Fixes for chan_ss7/mtp3d interface robustness New in version 2.4.6 - Fixed crash bug selecting right signaling link in rare cases New in version 2.4.5 - Fixed bug selecting right signaling link when multiple mtp3d configured, but not all running New in version 2.4.4 - Release cause fixed for t9 timeout (no answer) New in version 2.4.3 - Fix to continuity check New in version 2.4.2 - Fix to continuity check New in version 2.4.1 - Support receive COT after sending IAM New in version 2.4.0 - Fix for missing RDNIS New in version 2.3.11 - Fix for Asterisk 11 New in version 2.3.10 - Fix issue with setting audio capabilities for Asterisk 11 New in version 2.3.9 - Fix issue for mtp3d when handling linkset configured on other servers New in version 2.3.8 - Fix issue when dialing specific CIC New in version 2.3.7 - Fix locking problem and incorrect number when handling dual seizure - Support for multiple servers with multiple OPCs New in version 2.3.6 - Support for GRS for combined linksets New in version 2.3.5 - Support for music on hold (thanks to Igor V. Nikolaev) New in version 2.3.4 - Fix for Asterisk 11 media stream format capabilities New in version 2.3.3 - Support MTP TFP and TFA New in version 2.3.2 - Fixed bug for reattempt call (dual seizure, CIC blocked) New in version 2.3.1 - Support both normal and emergency link alignment procedures New in version 2.3.0 - Support for hop counter - SS7_HOP_COUNTER New in version 2.2.1 - Fix for loadsharing between linksets when mtp3d links not in-service New in version 2.2.0 - Compatibility with Asterisk 11 (input from Marian Piater from lam.cz) New in version 2.1.2 - Fixed ALAW/ULAW use for Asterisk <= 1.6 New in version 2.1.0 - Compatible with Asterisk 1.8.x (input from www.nethemba.com) New in version 2.0.0 - Preliminary ANSI support. New in version 1.4.3 - Handling of redirection info/number in REL. - Support multiple linksets on one E1/T1. - Fixes to mtp3d interface. - Setting SS7_TMR variable on incoming calls, using SS7_TMR variable to set TMR on outgoing calls. - Handling of redirection information in REL: SS7_RDNI, SS7_REDIR, SS7_REDIRECTCOUNT and PRIREDIRECTREASON. New in version 1.4.2 - Minor fixes New in version 1.4.1 - Fix for dial command CIC parsing. New in version 1.4 - Support for linkset groups. The config option "group" for a linkset specifies which group a linkset belongs to. The dial command is extended to allow dialing to a linkset group, e.g. Dial(SS7/group1) where group1 may consist of multiple linksets. - Handling/rejection of T.38 parameters. - Dial command syntax extended. Dialing specific CIC is Dial(SS7/linkset:cic-range), e.g. Dial(SS7/linkset1:1-10/number) for dialing out on linkset1 on CICs 1-10, or Dial(SS7/linkset1:2/number) for dialing on CIC 2. - Multiple DPC per linkset handling (Dutch ISUP). - New config parameter for link: iftype, either E1 or T1. New in version 1.3 - Support for multiple OPC (opc and dpc configuration settings now allowed in linkset section). - Support of hardware/driver HDLC and FCS and MTP2 mode. - New config parameter for link: stp, specifies STP point code. - Handling of generic numbers in IAM - Fixes for SCTP/IP - Support for multiple signaling time slots on one E1 (schannel and sls config parameters) - New config option for linkset: noa. Specify NOA for called party. 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.