Comtrol AT Commands - Manual (Page 90)

AT Commands for CX81801/CX06833/CX81300/CX06827 Modems Reference Manual
Conexant 102184B
3-64
<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.
5 LAPM error control required; disconnect if error
control is not established.
6 MNP error control required; disconnect if error
control is not established.
8 Initiate V.80 Synchronous Access Mode when
connection is completed, and Data State is
entered (see +ESA and +ITF commands).
9 Initiate Frame Tunneling Mode when connection
is complete, and Data Mode is entered.
Examples
+ES=6 Enable V.80 Synchronous Access Mode originator.
+ES=6 Enable V.80 Synchronous Access Mode originator.
+ES=,,8 Enable V.80 Synchronous Access Mode answerer.
+ES=6,,8 Enable V.80 Synchronous Access Mode originator and answerer.
+ES=3 Enable V.42 with Detection Phase originator. Disable V.80
Synchronous Access Mode originator.
+ES=,,2 Allow LAPM, MNP, or Normal Mode connection answerer. Disable
V.80 Synchronous Access Mode answerer.
+ES=3,,2 Enable V.42 with Detection Phase originator, allow LAPM, MNP, or
Normal Mode connection answer. Disable Synchronous Access Mode
originator and answerer.
Reporting Current or Selected Values
Command: +ES?
Response: +ES: <orig_rqst>,<orig_fbk>,<ans_fbk>
Example: +ES: 3,0,2 For the default setting.
+ES: 6,0,8 For V.80 Synchronous Access Mode
originator and answerer.
Reporting Supported Range of Parameter Values
Command: +ES=?
Response: +ES: (<orig_rqst> range),( <orig_fbk> range), (<ans_fbk> range)
Example: +ES: (0-4,6,7),(0-4),(0-6,8,9)