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Multi-Tech Systems MT5634ZBA User Manual

Page 27

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Chapter 4 - AT Commands, S-Registers, Result Codes

27

MultiModemDID User Guide

automode An optional numeric value that enables or disables automatic

modulation negotiation using V.8 bis/V.8 or V.32 bis Annex A.
Automode is disabled if values are specified for the

max_rate

and

max_rx_rate parameters. The options are:

0 Disable automode
1 Enable automode (default)

max_rate An optional number that specifies the highest rate at which the

modem may establish an upstream (transmit) connection. The
value is decimal coded in units of bps, for example, 33600
specifies the highest rate to be 33600 bps.

0 Maximum rate determined by the modulation selected in

mod

(default).

300–33600 Maximum rate value limited by the modulation selected in

mod.

For valid

max_rate values for each mod value, see the

following table.

mod value

Valid max-rate values (bps)

V92, V90, V34

31200, 28800, 26400, 24000, 21600,19200,

16800, 14400, 12000, 9600, 7200, 4800, 2400

V32B

19200, 16800, 14400, 12000, 9600, 7200, 4800

V32

14400, 12000, 9600, 7200, 4800

V22B

2400

V22, V23C, Bell212A

1200

V21, Bell103

300

max_rx_rate An optional number that specifies the highest rate at which the

modem may establish a downstream (receive) connection. The
value is decimal coded in units of bps, e.g., 28800 specifies the
highest rate to be 28800 bps.

0 Maximum rate determined by the modulation selected in

mod

(default).

300–56000 Maximum rate value limited by the modulation selected in

mod.

See “Possible rates” in the

mod table.