User guide

Introduction
10 MultiModemISI Hybrid Server Cards, ISIHP & ISIHI Series
From the perspective of the server PC, the ISIHP-2S/2U (or ISIHI-2S/
2U) is an eight-port serial card with eight devices permanently
attached to the serial ports (Figure 1-1). The first four ports are the
two terminal adapters, each of which appear as two ports. The
remaining four ports are the four central site modems. The following
chart summarizes the correlation of ports and devices.
2S/2U Port # Device ISDN Line Number
1TA 1
2TA 1
3TA 2
4TA 2
5 Modem 1
6 Modem 1
7 Modem 2
8 Modem 2
RJ-45 jack
Com Ports
Line 1
Line 2
Modem
Modem
Modem
Modem
TA
TA
7
8
3456
3
4
3456
6
2
1
5
ISDN
RJ-45 jack
Figure 1-1: Modems and Terminal Adapters of ISIHP-2S/2U and ISIHI-2S/2U.