MT5656ZDX Multi-Tech Systems, MT5656ZDX Datasheet - Page 8

• Manufacturer Part Number: MT5656ZDX
• Description: MODEM V.92 DATA/FAX
• Manufacturer: Multi-Tech Systems
• Series: MultiModem® ZDXr

Specifications of MT5656ZDX

• Data Format: V.92
• Interface: RS-232
• Voltage - Supply: 9V
• Mounting Type: Desktop
• Package / Case: 5.7" L x 4.3" W x 1.0" H (145mm x 109mm x 25mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 881-1020

Command:
Values:
Default:
Description:
Command:
Values:
Default:
Description:
Command:
Values:
Default:
Description:
Command:
Values:
Default:
Description:
Command:
Values:
Default:
Description:
Multi-Tech Systems, Inc. AT Commands Reference Guide (S000273F)
&Cn Data Carrier Detect (DCD) Control
&En V.42 Error Correction Modes
Yn
Zn
&Dn Data Terminal Ready (DTR) Control
Long Space Disconnect
Note:
n = 0 or 1
0
Y0
Y1
Modem Reset
n = 0 or 1
None
The modem performs a soft reset and restores (recalls) the configuration profile according
to the parameter supplied. If no parameter is specified, zero is assumed.
Z0
Z1
Note:
n = 0 or 1 (all models) 2, 3, 4, 5, 6, 7 (MT5600BA and MT5600BR only)
1, 3, 4
&C0
&C1
&C2
&C3
&C4
&C5
&C6
&C7
n = 0, 1, 2, or3
2
This command interprets the high to low transition of the DTR signal sent by the computer
according to the supplied parameter. The action taken depends on the current &Q setting.
&D0
&D1
&D2
&D3
Note:
Note:
n = 0, 1, or 2
1
&E0
&E1
&E2
For use with MT5600BA and MT5600BR only.
If &D1, &D2,or &D3 is set, the modem will not dial without a DTR drop.
For use with MT5600BA and MT5600BR only.
Disables sending/responding to a long space break signal on disconnect.
Enables long space disconnect. In non-error correction mode, the modem sends a
long space of four seconds prior to going on-hook. In non-error correction mode,
the modem responds to the receipt of a long space (i.e., a break signal greater than
1.6 seconds) by going on-hook.
Resets modem and restores Profile 0.
Resets modem and restores Profile 1.
See also the &F and &W commands.
Turns off reset on loss of carrier.
A second way to turn off reset on loss of carrier.
DCD goes high 500ms after CONNECT message is generated.
DCD goes high when the CONNECT message is generated.
Disables &C5 and &C6 commands.
UNIX only: Holds DCD low until proper callback security password is entered or
until a disconnect occurs. This prevents UNIX login prompt from being displayed
before the callback security ENTER PASSWORD prompt appears.
Linux only: Waits to display the connect message until the proper callback security
password is entered.
Resets on loss of DCD.
&Q0, &Q5,&Q6: DTR is ignored (assumed high). Allows operation with computers
that do not provide DTR.
&Q1: DTR drop causes the modem to hang up. Autoanswer is not affected.
&Q2,&Q3: DTR drop causes the modem to hang up. Autoanswer is inhibited.
&Q0, &Q1, &Q5,&Q6: DTR drop is interpreted by the modem as if the
asynchronous escape sequence had been entered. The modem returns to
asynchronous command state without disconnecting.
&Q2,&Q3: DTR drop causes the modem to hang up. Autoanswer is inhibited.
&Q0–&Q6: DTR drop causes the modem to hang up. Autoanswer is inhibited.
&Q0, &Q1, &Q5,&Q6: DTR drop causes modem to perform a soft reset as if the Z
command were received. The &Y setting determines which profile is loaded.
&Q2,&Q3: DTR drop causes the modem to hang up. Autoanswer is inhibited.
&Q5 or &Q6 and +FCLASS=1 or +FCLASS=2: Same as for &Q0.
V.42 non-error correction mode (V.42 disabled).
V.42 auto-reliable mode.
V.42 reliable mode (V.42 enabled).
Chapter 2 – AT Commands
8