HP Compaq Presario,Presario 2105 Reference Manual page 119

Reference Information
ECC Commands (Continued)
Command
+ER:
a
+ER=
n
+ES=
a,b,c
+ESR=0
+ETBM=
a,
b,c
7–10
(Conexant)
Select error control protocol: NONE=error control not in use,
LAPM=V.42 LAPM protocol, ALT=MNP.
Error control reporting: 0=disable, 1=enable.
Select error control and synchronous mode ( b and c are
optional).
■
a is requested mode when modem is originator: 0=initiate
call with direct mode, 1=initiate call with normal mode,
2=initiate V.42 without detection phase, 3=initiate V.42 with
detection phase (default), 4=initiate MNP, 6=initiate V.80
synchronous access mode when connection is completed.
■
b specifies fallback mode when modem is 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; 3=LAPM
error control required; 4=MNP error control required.
■
c specifies fallback mode when modem is 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; 5=LAPM error control required; 6=MNP
error control required; 8=initiate V.80 synchronous access
mode when connection complete.
Disable selective repeat option in V.42.
Handle data remaining in modem buffers on call termination
( b and c are optional):
■
a =0 disconnect occurs immediately and buffered transmit
data is discarded.
■
b =0 disconnect occurs immediately and buffered receive
data is discarded.
■
c =0 modem does not attempt to deliver buffered data and
discards data.
Reference Guide