User Manual
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Chapter 4—AT Commands, S-Registers, Result Codes
Q1 Disables result codes.
Q2 No response answer - Use this if you have answer mode handled without re-
sponses and echo turned off; keep the originate mode still intelligent.
Command: Sr=n Set Register Value
Values: r = S-register number; n varies
Default: None
Description: Sets the value of register Sr to the value of n, where n is entered in decimal format. Ex-
ample: S0=1.
Command: Sr? Read Register Value
Values: r = S-register number
Default: None
Description: Reads the value of register Sr and displays it in 3-digit decimal form. For example, S2?
gives the response 043.
Command: T Tone Dialing
Values: P, T
Default: T
Description: Configures the modem for DTMF (touch-tone) dialing. Dialed digits are tone dialed
until a P command or dial modifier is received.
Command: Vn 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).
Command: Wn Result Code Options
Values: n = 0, 1, or 2
Default: 2
Description: W0 CONNECT result code reports DTE (serial port) speed, disables protocol result
codes.
W1 CONNECT result code reports DTE (serial port) speed, enables protocol result
codes.
W2 CONNECT result code reports DCE (line) speed, enables protocol result codes.
Command: Xn Result Code Selection
Values: n = 07
Default: 4
Description: X0 Basic result codes (e.g., CONNECT); does not look for dial tone or busy signal.
X1 Extended result codes (e.g., CONNECT 46000 V42bis); does not look for dial tone
or busy signal.
X2 Extended result codes with NO DIALTONE; does not look for busy signal.
X3 Extended result codes with BUSY; does not look for dial tone.
X4 Extended result codes with NO DIALTONE and BUSY.
X5 Extended result codes with NO DIALTONE and BUSY.
X6 Extended result codes with NO DIALTONE and BUSY.
X7 Basic result codes with NO DIALTONE and BUSY.
Command: Zn Modem Reset
Values: n = 0 or 1
Default: None
Description: Z0 Resets modem to profile saved by the last &W command.
Z1 Same as Z0.