IBM X.25 - Manual (Page 13)

Chapter 1. Product Description
The IBM ARTIC X.25 Interface Co-Processor PCI adapter (called
PCI co-processor adapter throughout this book), with supporting
software, enables the attachment of a PCI-bus-compatible personal
computer system to an X.25 Packet-Switched Network so the
personal computer system can operate as a packet terminal.
Synchronous connection to the network is supported through an
interface that can be configured as either X.21 or X.21
bis using a
selectable optional cable.
The PCI co-processor adapter has its own microprocessor and
memory, allowing it to perform communications functions.
Highlights
The PCI co-processor adapter provides:
80C186XL microprocessor
512KB of dynamic random-access memory (DRAM)
Communications port that can, through optional cables, support
the X.25 layer through any one of the following interfaces:
– X.21 up to 64KBps duplex
– X.21
bis/V.24 (RS-232C) up to 19.2KBps duplex
– X.21 bis/V.35 up to 56KBps duplex
Automatic recognition of the selected interface cable
Capacity for the concurrent support of up to 250 virtual channels
Multiple card installation capability.
 Copyright IBM Corp. 1996 1-1