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Chapter 4 – AT Commands, S-Registers, and Result Codes
MT5634ZLX, MT5634ZLXI, MT5634ZLX/FE User Guide 17
Command Options Function & Description
; Return to command state after dialing a number without disconnecting
the call.
En AT command echo options.
E0 Echo disabled.
E1 (default) Echo enabled.
Hn Switch-hook control .
H0 Modem goes on-hook.
H1 Modem goes off-hook.
Ln Speaker Volume Control Level (0-3); L3 being the highest.
Mn Speaker control.
M0 Speaker always off.
M1 (default) Speaker on until carrier present.
M2 Speaker always on.
M3 Speaker off during dialing and on until carrier present.
Nn Select negotiate handshake.
N0 When originating or answering, handshake only at the communication
rate specified by the S37 register and “ATBn” and no fallback.
N1 (default) When originating or answering, start handshaking only at the comm
standard specified by S37 register and “ATBn”. During handshake,
fallback to a lower speed may occur except in “AT\N1” mode.
On Go on-line.
O0 Return modem to a previously established state.
O1 Begin an equalizer retrain sequence, then return to on-line state.
O3 to O14 Force modem to a new rate that is user defined. New rates are defined in
S62 register.
P Enable pulse dialing.
Qn Result code display options.
Q0 (default) Result code enabled.
Q1 Result code disabled.
T Enable tone dialing.
Vn Result code form.
V0 Display result code in numeric form (see also the result code options
table).
V1 (default) Display result code in verbose form.
Wn Select extended result codes.
W0 (default) CONNECT result code reports DTE speed. (See also the “Result Code
Options Table”)