The Macintosh PowerBook Fax/Data Modem will not communicate with the old
AppleFax Modem in standard data communication mode. The Macintosh
PowerBook Fax/Data Modem is capable of sending facsimiles to the AppleFax
Modem.
Page 92 of the "AppleFax Modem User's Guide" states the following:
"If you want, you can use a communications application as long as you're
communicating with another AppleFax Modem. A communications application
lets you transmit Macintosh files, type messages back and forth, and use
the modem commands described in Appendix B."
The manual goes on to say (on page 92) what communications parameters the
AppleFax Modem requires to successfully use a 9600-baud modem.
This means that the AppleFax Modem will allow you to transmit Macintosh
files (text files, MacPaint files, PICT files, and so on) to another
Macintosh at 9600 baud as long as both modems are AppleFax modems. It
isn't necessary for both AppleFax Modems to use the same communication
software as long they support the same transfer protocol.
The AppleFax Modem does support a subset of the Hayes "AT" command set.
For more information on this, look in Appendix B, which starts on page 137.