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Chapter 4 - AT Commands, S-Registers, Result Codes
16
MultiModemDID User Guide
Command: M
n
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: N
n
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
n
Return Online to Data Mode
Values: 0, 1, 3
Default: None
Description: O0 Exits online command mode and returns to data mode (see
+++AT<CR> escape sequence ).
O1 Issues a retrain and returns to online data mode.
O3 Issues a rate renegotiation and returns to data mode.
Command: P Pulse Dialing
Values: P, T
Default: T
Description: Configures the modem for pulse (non-touch-tone) dialing.
Dialed digits are pulsed until a T command or dial modifier is
received.
Command: Q
n
Result Codes Enable/Disable
Values:
n
= 0, 1
Default: 0
Description: Q0 Enables result codes.
Q1 Disables result codes.
Command: S
r
=
n
Set Register Value
Values:
r
= S-register number;
n
varies
Default: None
Description: Sets the value of register S
r
to the value of
n
, where
n
is
entered in decimal format. Example: S0=1.
Command: S
r
? Read Register Value
Values:
r
= S-register number
Default: None
Description: Reads the value of register
S
r
and displays it in 3-digit decimal
form. For example, S2? gives the response
043
.