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DECserver 900GM Installation
Introduction
The DECserver 900GM is a network access server that supports up to 16 full modem
control ports, or 32 eight–wire partial modem control ports. The DECserver 900GMx
is identical to the DECserver 900GM, except that it supports up to 8 full modem
control ports, or 16 eight–wire partial modem control ports. The ports may be used to
connect asynchronous devices including terminals, printers, modems, or PCs to an
Ethernet local area network (LAN). Both systems operate in a DEChub 900
Multiswitch or as a standalone access server.
Except where noted, all references to the DECserver 900GM also apply to the
DECserver 900GMx.
NOTE:
In this manual, the term Ethernet is Digital’s term for its product compatibility
with the ISO 8802-3/ANSI/IEEE 802.3 standards and the Ethernet
standards for Carrier Sense Multiple Access with Collision detection
(CSMA/CD) local area networks (LANs).
To give your workgroup LAN media flexibility and connectivity, the module can be
configured into a DEChub 900 MultiSwitch (also referred to in this manual as the
DEChub 900). One or more DECserver 900GM modules can be installed into the
DEChub 900 (a maximum of 8 DECservers can be present; however, to connect to
the network, there must also be at least one repeater or one bridge in the
configuration). The module can also serve as a standalone unit when configured with
a DEChub ONE docking station (see the
DEChub ONE installation manual).
When the module is installed into a DEChub 900, the module’s hot-swap capability
allows you to install or remove the module without turning off power to the DEChub
900.
The DECserver 900GM is configured with four 68-pin D-connectors (two for the
DECserver 900GMx), and provides full or limited modem control. Each port supports
16 baud rates from 75 baud to 115.2 Kbaud. The DECserver 900GM includes 4
megabytes (MB) of standard memory, and can be expanded to 8 MB.
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Throughout this manual, the term DEChub ONE refers to the DEChub ONE or the
DEChub ONE-MX docking station unless otherwise specified.
