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modem utilizes both V.42 bis and MNP5 data compression
standards to achieve peak transmission rates up to 57,600 bps.
For fax operation, the modem supports both Class 1 and Class
2 fax standards. Class 1 fax places most of the processing
burden on the software while Class 2 fax places it on the
modem. In addition, the modem also supports the CCITT V.17
fax protocol which allows fax transfers to occur over standard
telephone lines at 14,400 bps. To take advantage of the 14,400
bps data rate, you must connect to a fax machine or fax modem
that also supports the V.17 protocol.
KeepInTouch Card modems Model 3762 and Model 3764 also
support transmission over a cellular network. These models use
t
the ETC
(Enhanced Throughput Cellular) protocol which
improves data communications over cellular telephone
channels. For more information about cellular operation, refer to
Appendix D, Cellular Communications .
r
The Hayes
AutoSync feature is also available in selected
models of the KeepInTouch Card modem. For more information
on Hayes AutoSync, refer to the Using Hayes AutoSync section
in Chapter 2, Installation.
KeepInTouch Card Modem
Package
The following sections describe what equipment is supplied and
what equipment is required to install and operate the modem
(see Figure 1-1).
Supplied Equipment
The following hardware and software is included with the
modem:
G
One KeepInTouch Card modem
G
One user's guide
G
(For Model 3760 and Model 3762 only:) A 2-pin modular
telephone cord.
1-2
Issue 3 April 1994
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Troubleshooting
