Multitech MT9234ZBAUSBCDC Guía de usuario descargar pdf (Pagina 11)

Chapter 1 – AT Commands, S-Registers, and Result Codes

Multi-Tech Systems, Inc. AT Commands for the MultiModem & SocketModem MT9234 Series (S000434H) 11

N Modulation Handshake

Description: Sets the modem protocol for handling handshake negotiation at connection time if

the communication speed of the remote modem is different from the speed of the

ATN<value>

Values: 0 Modem performs handshake only at communication standard specified by S-

1 Modem begins handshake at communication standard specified by S-Register

S37 and command B. During handshake, fallback to a lower speed can occur.

Default: 1

Result Codes: OK if <value> = 0 to 1

ERROR if <value> ≠ 0 to 1.

O Return Online to Data Mode

Description: Exits online command mode and enters online data mode. If the modem is not in

online command mode when this command is received, the modem generates an

ERROR result code.

Syntax: ATO<value>

Values: 0 Exits online command mode and returns to data mode.

1 Issues a retrain before returning to online data mode.

3 Issues a rate renegotiations before returning to online data mode.

Default: 0

Result Codes: CONNECT if <value> = 0, 1, 3 and result code and call progress monitor are set to 0

(X0).

CONNECT <rate> if <value> = 0, 1, 3 and the result code and call progress monitor

are not set to 0 (X<value> where n = 1 to 7).

NO CARRIER if the connection is not successfully resumed.

ERROR if <value> ≠ 0, 1, 3.

P Set Pulse or Tone Dialing Default

Description: Configures the modem for pulse (non-touch-tone) or Tone dialing. All subsequent

D<dial_string> commands use pulse dialing until either the T command or a tone

dial modifier is received by the modem. Tone dialing is the default setting. This

command does not use parameters and generates an ERROR result code when

parameters are attached to the command.

Syntax: ATP

Values: P Pulse Dialing

T Tone Dialing

Default: T

Q Result Codes Enable/Disable

Description: Result codes are informational messages sent from the modem and displayed on the

monitor. Basic result codes include OK, CONNECT, RING, NO CARRIER, and

ERROR.

Use the Q<value> command to enable or disable result code generation by the

modem. If result codes are disabled and an invalid parameter value is entered, the

modem does not generate an ERROR result code because result codes are turn off.

Syntax: ATQ<value>

Values: 0 Enable result codes.

1 Disable result codes.

Default: 0

Result Codes: OK if <value> = 0 to 1

ERROR if <value> ≠ 0 to 1.

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Multitech MT9234ZBAUSBCDC Guía de usuario Pagina 11

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