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Chapter 3 – AT Commands, S-Registers, and Results Codes
Multi-Tech Systems, Inc. MT2834ZDX User's Guide 13
Command: $MBn Modem Baud Rate
Values: n = speed
Default: 28800 (ZDX) or 33600 (ZDXb)
Description: $MB300 Originate call at 300 bps.
$MB1200 Originate call at 1200 bps.
$MB2400 Originate call at 2400 bps.
$MB4800 Originate call at 4800 bps.
$MB7200 Originate call at 7200 bps.
$MB9600 Originate call at 9600 bps.
$MB14400 Originate call at 14,400 bps.
$MB16800 Originate call at 16, 800 bps.
$MB19200 Originate call at 19,200 bps.
$MB28800 Originate call at 28,800 bps.
$MB33600 Originate call at 33,600 bps (ZDXb only).
Command: Nd Dial a Stored Number
Values: d = 0 or 1
Default: None
Description: Dial stored telephone number d.
Command: NdNe. .. Number Linking
Values: d = 0 or 1; e = 1 or 0
Default: None
Description: Dial stored number d; if it is busy, dial stored number e.
Command: O Go Back Online
Values: n/a
Description: Return to online mode after you have used an escape sequence to go from online mode to
command mode.
Command: P Pulse Dial
Values: n/a
Default: Yes
Description: The modem pulse-dials numbers that follow P in the dialing command.
Command: &Pn Set Pulse Dial Ratios
Values: n = 0 or 1
Default: 0
Description: &P0 60:40 break/make pulse ratio.
&P1 67:33 break/make pulse ratio.
Note: The ZDXK is locked to a 67:33 pulse ratio (&P1).
Command: Qn Result Codes Enable/Disable
Values: n = 0, 1, or 2
Default: 0
Description: Q0 Enable result codes.
Q1 Disable result codes (quiet).
Q2 Enable no-response answer mode, which leaves originate mode intelligent while turning off
answer mode responses and echo.
Command: &Qn Multi-Tech or Standard Result Codes
Values: n = 0 or 1
Default: 0
Description: &Q0 Multi-Tech responses with modifiers.
&Q1 Standard AT responses with no modifiers.
Command: Rn Reverse Originate/Answer Modes
Values: n = 0 or 1
Default: 0
Description: R0 Modem will not reverse modes.
R1 Modem will reverse modes when R is added to the dial string.