Apple PowerBook 165 - Manual (Page 22)

Specifications Other - 13
Other
Fax/Data Modem
Internal 2400-baud modem with fax send at 9600 baud (includes
fax send software)
300/1200/2400 bps transmission rates
Serial binary and asynchronous protocols
Error correction and data compression: MNP 4, 5 and V.42,
V.42bis