MultiModemII User Guide

 

&X2

 

Selects slave receive timing. The modem derives the transmit

 

 

 

clock signal from the incoming carrier and applies it to the

 

 

 

TXCLK output at the serial interface

Command:

&Yn

 

Select Profile for Hard Reset

Values:

 

 

n = 0 or 1

Default:

 

None

Description:

&Y0

 

Select profile 0 to be loaded on power-up.

 

&Y1

 

Select profile 1 to be loaded on power-up.

 

 

 

 

 

 

 

Note: See also the &W and Z commands.

 

 

 

 

Command:

&Zy=x

 

Store Telephone Number

Values:

 

 

y = 0–3

 

 

 

x = Dialing command

Default:

 

None

Description:

 

 

Stores telephone dial string x in memory location y. Each tele-

 

 

 

phone number dial string can contain up to 30 digits. Dial the

 

 

 

stored number using the DS=y command.

 

 

 

 

 

 

 

Note: DTR dialing uses the number stored in memory location 3.

 

 

 

 

Command:

%Cn

 

Data Compression Control

Values:

 

 

n = 0, 1, 2, or 3

Default:

 

3

Description:

 

 

Enables or disables data compression negotiation. The modem

 

 

 

can only perform data compression on an error-corrected link.

 

%C0

Disables data compression.

 

%C1

Enables MNP 5 data compression negotiation.

 

%C2

Enables V.42bis data compression negotiation.

 

%C3

 

Enables both V.42bis and MNP 5 data compression negotiation.

Command:

%En

 

Line Quality Monitor

Values:

 

 

n = 0, 1, or 2

Default:

 

2

Description:

 

 

Controls whether or not the modem will automatically moni-

 

 

 

tor the line quality and request a retrain (%E1) or fall back to a

 

 

 

lower speed when line quality is insufficient and fall forward

 

 

 

to a faster speed when line quality is sufficient (%E2).

 

%E0

Disable line quality monitor and auto-retrain.

 

%E1

Enable line quality monitor and auto-retrain.

 

%E2

Enable line quality monitor and fallback/fall forward.

Command:

%L

 

Line Signal Level

Values:

 

None

Default:

 

None

Description:

%L

 

Returns a value that indicates the received signal level in dBm.

 

 

 

The value returned is a direct indication (DAA-dependent) of

 

 

 

the receive level at the MDP, not at the telephone line connector.

 

 

 

Examples: 009 = -9 dBm, 043 = -43 dBm, and so on.

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Multi-Tech Systems MT5600BA manual Select Profile for Hard Reset, Zy =x Store Telephone Number, Data Compression Control