Synxcom SM9234D, User Manual

Page: 92 / 216

AT Commands
Page 92
Error Control Command
+ES - Error Control and Synchronous Mode Selection
This extended-format command specifies the initial requested mode of operation
when the modem is operating as the originator, optionally specifies the acceptable
fallback mode of operation when the modem is operating as the originator, and
optionally specifies the acceptable fallback mode of operation when the modem is
operating as the answerer. It accepts three numeric subparameters:
Syntax +ES=[<orig_rqst>[,<orig_fbk>[,<ans_fbk>]]
]
Defined Value
<orig_rqst> Decimal number which specifies the initial requested mode of
operation when the modem is operating as the originator. The
options are:
0 Initiate call with Direct Mode.
1 Initiate call with Normal Mode (also referred to
as Buffered Mode) only.
2 Initiate V.42 without Detection Phase. If V.8 is
in use, disable V.42 Detection Phase.
3 Initiate V.42 with Detection Phase. (Default.)
4 Initiate MNP.
6 Initiate V.80 Synchronous Access Mode when
connection is completed, and Data State is
entered. (See +ESA and +ITF commands.)
7 Initiate Frame Tunneling Mode when
connection is complete, and Data Mode is
entered.
<orig_fbk> Decimal number which specifies the acceptable fallback mode
of operation when the modem is operating as the originator.
0 LAPM, MNP, or Normal Mode error control
optional. (Default.)
1 LAPM, MNP, or Direct Mode error control
optional.
2 LAPM or MNP error control required;
disconnect if error control is not established.
3 LAPM error control required; disconnect if error
control is not established.
4 MNP error control required; disconnect if error
control is not established.
<ans_fbk> Decimal number which specifies the acceptable fallback mode
of operation when the modem is operating as the answerer or
specifies V.80 Synchronous Access Mode.
0 Direct Mode.
1 Error control disabled, use Normal Mode.
2 LAPM, MNP, or Normal Mode error control
optional. (Default.)
3 LAPM, MNP, or Direct Mode error control
optional.
4 LAPM or MNP error control required;
disconnect if error control is not established.