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Chapter 1:
INTRODUCTION
1-4 CSMIM-T1 Hardware Installation Guide
1.5 CSMIM-T1 OVERVIEW
The CSMIM-T1 is a dual-slot, Annex Software compatible system
designed to reside in the MMAC series of hubs. The module takes the
existing CSMIM2 core and adds enhanced processing power in the form
of dual 486SXLC2-40 clock doubled processors. Both the main and
secondary processors have been upgraded, which allows the main
processor to control the MMAC network interfaces, while the second
controls the serial ports. These processors have access to a minimum of
4 MB DRAM (standard), but may be upgraded to 8 MB through the
installation of SIMM modules. This memory is shared between the
processors, and arbitrated on a cycle by cycle basis.
Extensive power up diagnostics are provided to confidence check the
system prior to the loading of application software. A Console Port is
used for system setup, booting, and diagnostic purposes. After booting,
the Console Port is idle. System boot is accomplished either from a UNIX
host, a VAX VMS host, or an optional Flash PROM. If you are operating
from Flash only, be aware that host based services such as security are
not
supported. If you have any questions, contact Cabletron Technical
Support.
It should be mentioned that although the CSMIM-T1 is capable of
running in a Novell environment, it will not boot from a Novell server. In
a Novell environment, the module must be booted either from a UNIX
server, or from Flash.
There are 24 V.34 modems in the CSMIM-T1. Access for the T-1 network
is provided by a single RJ48C connector on the front panel. Data received
from the T-1 network is either moved through the CSMIM-T1 module and
onto the Ethernet backplane, or fed back out through the Drop and Insert
Interface on the front panel. An example of this would be connecting the
Drop and Insert Interface to a PBX for voice applications.