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Modulation

<mod>

Selected Possible rates (bps)

0 V.21 300

1 V.22 1200

2 V.22bis 2400 or 1200

3 V.23 1200*

9 V.32 9600 or 4800

10 V.32bis 14400, 12000, 9600, 7200, or 4800

11 V.34 33600, 28800, 26400, 24000,

21600, 19200, 16800, 14400,

12000, 9600, 7200, 4800, or 2400

(DEFAULT)

64 Bell 103 300

69 Bell 212 1200

74 V.FC 28800, 26400, 24000, 21600,

19200, 16800, 14400

* For V.23, originating modes transmit at 75bps and receive at 1200bps;

answering modes transmit at 1200bps and receive at 75bps. The rate is always

specified at 1200bps.

The modem may also automatically switch to another

modulation (automode), subject to the following constraints:

n The modem may not be able to automatically switch from

the current modulation (specified by <mod>) to some other

modulation. For example, there is no standard way to

automode from Bell 103 to V.23.

n The DTE may disable automode operation

(see <automode>).

n The DTE may constrain the range of modulations available

by specifying the lowest and highest rates (see <min_rate>

and <max_rate> below).

Modem Command Reference

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Boca HOME OFFICE Betriebsanweisung Seite 45