MultiModemDSVD User Guide 4 AT Commands, S-Registers, and Result Codes
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Command: O
n
Return Online to Data Mode
Values: 0 or 1
Default: None
Description: O0 Exit online command mode and return to online data mode
without a retrain. Normally used after a +++ escape (see
+++AT<CR> escape sequence).
O1 Exit online command mode and return to online data mode
after a retrain.
Command: P Pulse Dialing
Values: P, T
Default: T
Description: Forces pulse (non-touch-tone) dialing until a T command or
dial modifier is received.
Command: Q
n
Result Codes Enable/Disable
Values: n = 0 or 1
Default: 0
Description: Q0 Enable result codes.
Q1 Disable result codes.
Command: S
r
Select Register
Values: r = S-register number
Default: None
Description: Selects register Sr as the last register accessed. E.g., S0. The
command AT? can then be used to read the register, and the
command AT=n can then be used to set the register to value n.
Command: S
r
=
n
Set Register Value
Values: r = S-register number; n varies
Default: None
Description: Set value of register Sr to n, where n is entered in decimal for-
mat. E.g., S0=1. If the short form AT=n is used, the value is
written to the last accessed S-register.
Command: S
r
? Read Register Value
Values: r = S-register number
Default: None
Description: Read value of register Sr and display it in 3-digit decimal for-
mat. E.g., S2? gives the response 043. If the short form AT? is
used, the last accessed S-register is read.
Command: T Tone Dialing
Values: P, T
Default: T
Description: Forces DTMF (touch-tone) dialing until a P command or P dial
modifier is received.
Command: V
n
Result Code Format
Values: n = 0 or 1
Default: 1
Description: V0 Displays result codes as digits (terse response).
V1 Displays result codes as words (verbose response).