Cisco Port Adapter 8p ISDN BRI PA-8B-S/T= Data Sheet

Data Sheet

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The ISDN port adapters for the Cisco 7200 and 7500 Series

routers provide network administrators with flexible

solutions that encompass a broad range of organizational

networking needs, allowing them to maximize router

efficiency and economy for ISDN applications.

For network administrators who require Basic Rate Interface

(BRI) access to ISDN communications, Cisco offers BRI port

adapters for the Cisco 7200 Series routers. The BRI port

adapters come in two versions: one with four ports, the other

with eight. The four-port BRI port adapter supports

U-interfaces by including an on-board NT-1 device for

network termination. The eight-port version supports S/T

interfaces, and used in environments where NT-1 support is

not required; This relaxed requirement enables the doubling

of port density.

Both port adapters offer basic “two-B-plus-D”

connectivity, supporting 2 B-channels, each operating at 64

or 56 Kbps for a maximum data rate of 128 Kbps. A single

D-channel is supported for signaling. BRI port adapters are

particularly useful for aggregating traffic from relatively

low-speed ISDN networks into high-end routers, as well as

providing back-up functionality for high-speed links in the

case of network failure. Cisco’s BRI port adapters are

designed for use with the Cisco 7200 Series router only, and

are not supported on the Cisco 7500 Series routers.

• Cost-effective ISDN connectivity

– Up to 48 BRI ports per Cisco 7206 chassis

– Provides cost-effective BRI concentration for Cisco

7500 Series routers

• Two versions, supporting either four- or eight-ports

utilizing standard U- and S/T-interfaces to meet

international connectivity requirements, and provide

density options.

• Flexible functionality

– Supports hardware- and software-based compression

– Supports ISDN, X.25, HDLC, Frame Relay, LAPB, and

PPP encapsulation

– Supports load sharing across B-channels using

Multilink-PPP

– Support for use of B-channels as leased-lines on a

port-by-port basis

• Supports ISDN MIBs

• Supports On-line Insertion/Removal (OIR)

• Supports full Cisco IOS

™

• Mechanically-keyed to prevent incorrect slot-installation