Product data

USRobotics
Command Reference
Data Command Set - 52
<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.
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).
Examples
+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.