Nortel Modular ICS 7.1, Install Manual

Page: 86 / 700

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/ Working with ISDN
Modular ICS 7.1 Installer Guide N0130943 02
ISDN router
By connecting an ISDN router to your Modular ICS, a group
of PCs can share Internet access. This arrangement is best for
a workplace where each personal computer occasionally uses
an Internet connection.
To support Internet access, you must order BRI lines from
your service provider, and subscribe to an Internet service
from an Internet service provider (ISP). Your personal
computer must have an Internet browser and any applications
supplied by your ISP.
D-packet service (BRI cards only)
The D-packet service supplied by the Modular ICS supports a
point-of-sale terminal adapter (POSTA). Connecting a
POSTA allows transaction terminals, such as devices where
you swipe credit or debit cards, to transmit information using
the D channel of the BRI line. At the same time, the B channels
of the BRI line remain available for voice and data calls. A
special adapter links transaction equipment, such as cash
registers, credit card verification rigs, and point-of-sale
terminals, to the X.25 network. This is a data communications
network designed to transmit information in the form of small
data packets.
ISDN
ICS
U-LT loop
PCs with
applications
ISDN router
LAN