3 AT Commands, Result Codes, and S-Registers

 

I4

Display firmware version for data pump (e.g., 94).

 

I9

Display country code (e.g., NA Ver. 1).

 

I11

Display Diagnostic Information for the last Modem

 

 

Connection (i.e., DSP and Firmware version, Link Type,

 

 

Line Speed, Serial Speed, Type of Error Correction/Data

 

 

Compression, Number of past Retrains,etc.)

Command:

Ln

Monitor Speaker Volume

Values:

 

n = 0, 1, 2, or 3

Default:

 

2

Description:

L0

Select low volume.

 

L1

Select low volume.

 

L2

Select medium volume.

 

L3

Select high volume.

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:

O

Return Online to Data Mode

Values:

 

0, 1, 3

Default:

 

None

Description:

O0

Exit online command mode and return to data mode.

 

O1

Issue a retrain and return to online data mode.

 

O3

Issue a rate renegotiation and return to data mode.

MT5634ZPX-PCI

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Multi-Tech Systems MT5634ZPX-PCI owner manual Monitor Speaker Volume, Monitor Speaker Mode, Modulation Handshake