Multi-Tech Systems ISIHP-2S - Manual (Page 4)

Introduction
4 MultiModemISI Hybrid Series, ISIHP-2S/2U
elcome to Multi-Tech’s new MultiModemISI Hybrid Series,
model ISIHP-2S/2U, a multiport hybrid ISDN card that can be
W
plugged into any PCI slot for Remote Access Server (RAS)
applications. Included on the ISIHP-2S/2U are four V.90/K56flex
central site modems for incoming analog modem and fax calls, as well
as two terminal adapters. Each terminal adapter appears as two ports
to the server PC using the ISIHP-2S/2U. The terminal adapters
identify incoming analog calls and route them to the central site
modems. The ISIHP-2S/2U also supports dial-out applications via the
modems or terminal adapters.
The card features eight RAS ports using two Basic Rate Interface
(BRI) ISDN lines. The eight ports allow a server to accept any
combination of analog modem and digital ISDN calls, giving the user
the flexibility to customize the settings of the terminal adapters and
modems. Since the two BRI lines constitute only four Bearer channels,
only four of the eight ports can be active at any one time. The two
terminal adapters handle the four B-channels as four independent data
connections (see diagram below).
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
Introduction Welcome and Product Description