Multitech MultiModem ZBA Series At Commands Reference Manual page 10

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Multi-Tech Systems, Inc. AT Commands for the MT5634 Family of Products (S000272J)
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Nn Modulation Handshake
n = 0 or 1
1
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.
On Return to Online Data Mode
0, 1, 3
None
O0 Exits online command and returns to data mode (see +++AT escape sequence).
O1 Issues a retrain and returns to online data mode.
O3 Issues a rate renegotiation and returns to data mode.
P Set Pulse Dial Default
P, T
T
Configures the modem for pulse (non-touch-tone) dialing. Dialed digits are pulsed until a T
command or dial modifier is received.
Qn Result Codes Enable/Disable
n = 0 or 1
0
Q0 Enables result codes.
Q1 Disables result codes.
Q2 Dumb Answer Mode (also known as No Response Answer). Q2 sets the answer
mode to be handled without responses and echo turned off; however, the originate
mode remains intelligent.
Sr=n Set Register Value
r = S-Register number; n varies
None
Sets the value of the register Sr to the value of n, where n is entered in decimal format:
Example: S0=1.
Sr? Read Register Value
r = S-Register number
None
Reads the value of the register Sr and displays it in 3-digit decimal form. Example: S2?
gives the response 043.
T Set Tone Dial Default
P, T
T
Configures the modem DTMF (touch-tone) dialing. Dialed digits are tone dialed until a P
command or dial modifier is received.
Vn Result Code Format
n = 0 or 1
1
V0 Displays result codes as digits (short form or terse).
V1 Displays result codes as words (long-form or verbose).
Wn Result Code Options
n = 0, 1, 2
2
W0 CONNECT result code reports serial port speed, disables protocol result codes.
W1 CONNECT result code reports serial port speed, enables protocol result codes.
W2 CONNECT result code reports line speed, enables protocol result codes.
Chapter 1 – AT Commands
10