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Chapter 1 Introduction
The proliferation of PCs and LANs with bandwidth intensive applications, has
generated a powerful demand for high-speed connections.
The worldwide
standardization of ISDN, combined in many countries with its growing availability and
falling cost, make it a natural choice for enhancing data throughput.
ISDN T/A 128 adapters provide high-performance solutions for
Internet access, file
transfer, remote access service (RAS), video conferencing, and running existing
modem applications
through the ISDN network.
ISDN T/A 128 Adapters
There are two types of ISDN interface of ISDN T/A 128 adapter,
ST and U
interface. If
you purchased the ST interface adapter (eg. IA128-ST), you need an ISDN NT1 device
connect to the ISDN switch. If you purchased the U interface adapter (eg. IA128-U), it
can directly connect to the ISDN switch. (figure 1-1)
There are two types of PC buses of ISDN T/A 128 adapter,
ISA and
PCI. Each bus (ISA
or PCI) and each interface (ST or U) has two models option,
"D" and
"DV". All of the
features between " D" and " DV" models are the same, except " DV" model provides an
extra standard a/b (POTS) port.
IA128-ST
ISDN
T interface
NT1
customer
ISDN U interface
ISDN U interface
ISDN central office
IA128-U
customer
Figure 1-1 ISDN T/A 128 adapters connection diagram
You can easily get the information from " IA128-U-DV" type are ISA bus, ISDN card, U
1
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