Apple GeoPort Telecom Adapter Kit - Manual (Page 58)

GENERAL
Command set Hayes compatible, TR29 class 2 Group 3 fax,
voice macro commands
Error correction MNP4-V42
Data compression MNP5-V42 bis
Serial speed 300 to 115200 bps
Line speed 75, 300, 1200, 2400, 4800, 7200, 9600,
14400, 28800
Data format Serial, binary, asynchronous, 7 or 8 bits,
even or odd parity
Dialing Tone or pulse
Voice functions Automatic detection of fax or voice calls,
answering machine, local record/playback
Parameters Saved in non-volatile memory
Command buffer 64 characters
58 Appendix A