- Fix: AOC-D unit information length was set to 1 despite its actual length
- Removed optional BillingID from AOC-E data
- Cross-checked AOC-D and AOC-E IEs to other systems (Audiocodes Mediant 800; traces found in public sources)
- Tested with ISDN TEs: Siemens Profiset 51, T-Concept P522, Philips SOPHO ErgoLine, sphairon NT1PLUS-split; K1297 ISDN protocol tester
- Attach AOC-E to DISCONNECT or RELEASE; transmit AOC-E even if zero units have been charged
- Send AOC-D with zero units to indicate free of charge call
- New option "time-no-seconds" disables sending current seconds within the date/time IE