Short summary of changes: (Massive) rework of the Q.921 layer Q.931 changes to get BRI PTMP working and cleanups (more to come...) Add Hi-Layer compat and Progress IE to outgoing SETUP messages Improve handling of call tear-down in zap_isdn.c Open ZAP I/O channels after processing the dialplan for incoming calls Bearer Capability and Channel ID IE handling improved for BRI/PRI and A-law/u-law
