PORTABLE USB MODEM

 

I9

Display the country code (for example, NA Ver. 1).

 

I11

Display diagnostic information for the last modem

 

 

connection, such as DSP and firmware version, link

 

 

type, line speed, serial speed, type of error

 

 

correction/data compression, number of past

 

 

retrains, etc.

Command:

Mn

Monitor Speaker Mode

Values:

 

n=0, 1, 2, or 3

 

Default:

1

Description:

M0

Speaker always off.

 

M1

Speaker on until carrier signal detected.

 

M2

Speaker always on when modem is off-hook.

 

M3

Speaker on until carrier is detected, except while

 

 

dialing.

Command:

Nn

Modulation Handshake

Values:

 

n=0 or 1

Default:

 

1

Description:

N0

Modem performs handshake only at

 

 

communication standard specified by S37 and the

 

 

B command.

 

N1

Modem begins handshake at communication

 

 

standard specified by S37 and the B command.

 

 

During handshake, fallback to a lower speed can

 

 

occur.

Command:

On

Return Online to Data Mode

Values:

 

n=0, 1, 3

Default:

 

None

Description:

O0

Exit online command mode and return to data

 

 

mode (see +++AT<CR> escape sequence ).

 

O1

Issue a retrain and return to online data mode.

 

O3

Issue a rate renegotiation and return to data mode.

Command:

P

Pulse Dialing

Values:

 

P, T

Default:

 

T

Description:

 

Configures the modem for pulse (non-touchtone)

 

 

dialing. Dialed digits are pulsed until a T command

 

 

or dial modifier is received.

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Black Box MD403A user manual Monitor Speaker Mode, Modulation Handshake, Return Online to Data Mode, Pulse Dialing

MD403A specifications

The Black Box MD403A is a powerful and versatile device widely recognized for its advanced technology and its ability to streamline data communication. Ideal for both personal and professional use, the MD403A is designed to cater to various environments, from small offices to larger enterprises.

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