User Manual

User's Manual
11
AT& Commands
&An
*
Connect message format
Select the format of the CONNECT message.
&A0 no extra messages besides CONNECT xxxxx
&A1 Add Modulation indicator:
V.21/ V.22/ V.22BIS/ V.32/ V.32BIS/ V.34/ V.34BIS/ B103/ B212
For example:
Modulation: V.34
&A2 Add Error Detection Protocol and Data Compression indicators.
For example:
Protocol: LAPM/MNP/NONE
Compression: CLASS 5/V.42BIS/NONE
&A3 Add Modulation Indicator + Error Detection Protocol + Data Compression indicators
(see above).
Related S-Reg: S70, S71
&Cn
*
Control Carrier Detect (CD,RLSD) behavior
Controls the RLSD output behavior.
&C0 RLSD is assumed to be ON all the time
&C1 RLSD follows the carrier state
Result codes:
OK n=0 or 1
Error Otherwise
Related S-Reg: S60
&Dn
*
Controls DTR behavior (NA)
Controls the DTR output behavior.
Note: This command is supported for compatibility.
It has no significance in Modio environment.
&D0 DTR is taken to be ON all the time
&D1 DTR drop causes entry to command mode without disconnect
&D2 DTR follows DTR circuit definition
&D3 DTR drop causes software reset (as in Z0)
Result codes:
OK n=0-3
Error Otherwise
Related S-Reg: S63
&En
*
Connect message speed source
Select the requested source for the speed field in the CONNECT message.
&E0 DCE Speed
&E1 DTE Speed
Note: Since a virtual port is involved, the DTE is not bound by any UART limitation, and may
be theoretically set as high as 921600.
DTE speed is supported for compatibility only. It bears little significance in Modio
environment.
Related S-Reg: S71