Advanced Communications Controller - HP 9000 Installation And Configuration Manual

Chapter 1

Advanced Communications Controller

The Multiprotocol Advanced Communications Controller (ACC) is a
family of high performance, multi-port Multiprotocol wide area network
(WAN) adapters for HP 9000 computers. The ACC products support two
or eight RS232/V.35/RS449/X.21 connections, or four E1/T1 connections
on a single HP-PB, EISA, or PCI network interface board..
HP's ACC supports one or multiple protocols on a single card. Supported
protocols include:
• X.25
• HDLC/LAP-B, NRM
• ISDN - PRI
• OSI
With the ACC, systems may be configured for card-level or system-level
load sharing or redundancy for single-site and multi-site operations. For
card-level redundancy, a system can be configured with two cards that
connect to one "dual connect" distribution panel. This allows a network
connection to be programmatically assigned to one of the two cards and
switched to one of the two cards and switched to the backup card in case
of failure.
For system-level redundancy, two systems with ACC cards, either local or
remote, may be configured using "dual connect" distribution panels such
that if one system can no longer receive traffic, the traffic is routed to a
second system.
Advanced Communications Controller
ACC Overview
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