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SERIES II INTELLIGENT DATA/FAX MODEMS
Reliable Mode &E2
In Reliable mode, the Series II Modem uses its V.42 error correction
capabilities during all transmissions, and must be connected to another
modem with a similar protocol activated (MNP or LAP-M).
V.42 Mode Select #L
The V.42 standard implements both MNP Class 3 & 4 and LAP-M error
correction methods. The V.42 Mode Select command (#L) selects which
type of error correction (MNP or LAP-M) your Series II Modem uses for
transmissions.
The various #L command options are as follows.
#L0 Command The #L0 Command allows a pair of
modems to negotiate which V.42 mode
(MNP or LAP-M) will be used in their
transmissions.
Originate Mode
a. If both modems have LAP-M capability,
the modems use LAP-M mode.
b. If one or both modems do not have LAP-
M capability and both have MNP, the
modems use the MNP mode.
#L0 Command (cont'd) Answer Mode
a. The answering modem responds to either
an MNP Link Request or LAP-M Originator
Detection Pattern (ODP) signal depending
on which the originating modem issues.
#L1 Command The #L1 Command sets your modem to
MNP error correction and disables LAP-M.
This command is for Originate mode only.
In Answer mode, the modem still accepts
MNP or LAP-M.
#L2 Command The #L2 Command sets your modem to
LAP-M error correction, and disables MNP.