Hn — switch-hook control, Examples – Ositech comm Trumpcard Data/Fax Modem User Manual

Page 43

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User’s Guide and Reference

4 - 11

Modem Command Reference

9

V.32

9600 or 4800

10

V.32bis

14400, 12000, 9600, 7200, or 4800

11

V.34

28800, 26400, 24000, 21600, 19200, 16800,
14400, 12000, 9600, 7200, 4800, or 2400

64

Bell 103

300

69

Bell 212

1200

74

VFC

28800, 26400, 24000, 21600, 16800, or 14400

2. <automode> is an optional numeric value which enables or disables
automatic modulation negotiation using V.8 or V.32bis annex a. The
options are:

<automode>

Option Selected

Notes

0

Automode disabled

1

Automode enabled using V.8 or V32bis annex A Default

3. <min_rate> is an optional number which specifies the lowest rate at
which the modem may establish a connection. The value is decimal
coded, in units of bps, e.g., 2400 specifies the lowest rate to be 2400 bps.
the default is 300 for 300 bps

4. <max_rate> is an optional number which specifies the highest rate at
which the modem may establish a connection the value is decimal
coded, in units of bps, eg., 14400 specifies the highest rate to be 14400
bps. the default is 28800 for 28800 bps

Hn — Switch-Hook Control

Parameters

0 or 1

Default

0

If the user enters the command mode from the data mode issuing the
escape sequence(+++), or as a result of an ON-to-OFF transition of DTR
with the &D1 option in effect, the user may cause the modem to go on-
hook (disconnect) by issuing the H0 command.

Examples

ATH0

Causes the modem to go on-hook (hang-up)

ATH1

If the modem is on-hook, modem goes off hook,
returns an OK response, and awaits further
commands

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