Cabletron Systems CSMIM-T1 - Manual (Page 153)

Commands
CSMIM-T1 Hardware Installation Guide 7-27
Table 7-7 indicates the type of connections, depending on the
operating mode. NC indicates No Connection. Where more than
one operating mode is in a column, the first mode is for the
originating modem and the second mode is for the answering
modem.
Table 7-7 Connection Types Depending on Operating Mode
O n Enter Connect State
O0 Enters connect state.
O1 Begins an equalizer retrain sequence when operating at 2,400 bps
or higher and then returns to connect state.
Type: ATO1 to reduce errors due to loss of equalization
when excessive bit error rates are present.
NOTE
MNP Extended Services: In the chart, you can use MNP
Extended Services for V.42 connections where LAPM appears
if both modems are set with -K1 or -K2.
Answering
Modem Originating Modem
\N0 \N1 \N2 \N3 \N4 \N5 \N6
\N0 normal direct
/normal NC normal NC normal NC
\N1 normal
/direct direct NC normal
/direct NC normal
/direct NC
\N2 NC NC MNP MNP NC NC MNP
\N3 normal direct
/normal MNP LAPM LAPM LAPM LAPM
\N4 NC NC NC LAPM LAPM LAPM LAPM
\N5 direct direct
/normal NC LAPM LAPM LAPM LAPM
\N6 NC NC MNP LAPM LAPM LAPM LAPM