PC Card Modem with Ethernet Adapter User Guide MT5634ZLX, MT5634ZLXE,MT5634ZLX, MT5634ZLXE-T, MT5634ZLX 2

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Chapter 3 - AT Commands, S-Registers, and Result Codes
MT5634ZLX/E
Zn Recall stored profile.
Z0 Reset and recall user profile 0. Either Z0 or Z1 restores the same single profile.
Extended “AT&” (Ampersand) Command Set (* indicates factory default setting)
Command Function
&Cn Data carrier detect option
&C0 State of carrier from remote modem is ignored. DCD circuit is always on.
&C1 * DCD turns on when the remote modem’s carrier signal is detected, and off when the
carrier signal is not detected.
&Dn Data Terminal Ready (DTR) option
&D0 DTR ignored
&D1 Go to command mode on on-to-off DTR transition.
&D2 * Hang up and go to command mode on on-to-off DTR transition. Auto-answer is
disabled if DTR is low.
&D3 Hang up and reset from user profile 0 on the on-to-off DTR transition.
&F Recall factory default setting as active configuration.
&Gn V.22bis guard tone option
&G0 * No guard tone
&G1 550 Hz guard tone
&G2 1800 Hz guard tone
&Kn Set local flow control
&K0 Disable flow control
&K3 * Enable bi-directional hardware flow control (CTS/RTS).
&K4 Enable bi-directional software flow control (XON/XOFF).
&Qn Async communications mode options
&Q0 Async mode, buffered (same as “AT\N0”)
&Q5 * Error control mode, buffered (same as “AT\N3”)
&Q8 MNP error control mode. If an MNP error control protocol is not established, the
modem will fallback according to the current setting in S36 register.
&Q9 V.42 or MNP error control mode. If neither error control protocol is established, the
modem will fallback according to the current setting in S36 register.
&Sn Data Set Ready (DSR) option
&S0 * DSR always on
&S1 DSR on during handshake and on-line, off in test mode or idle mode
&Tn Self-test commands
&T0 Terminate any test in progress
&T1 Local analog loopback test
&T3 Local digital loopback (LDL) test