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1500
About the RAS 1500
The RAS 1500 is a stackable unit that provides terminal server and remote
access services, via analog and ISDN BRI connections in a multi-protocol
networking environment.
Consisting of a base router module (RM), port expansion module (PEM),
and user-installable Input/Output (I/O) modules, RAS 1500 integrates
multiprotocol remote access server and WAN router technology with
high-performance 56 kbps (V.90) and/or ISDN modems.
Overview
The RAS 1500 is a powerful data communications platform that can
support a broad variety of remote access applications.
The basic configuration of a RAS 1500 stack consists of one RM and two
PEMs and supports up to 24 channels (up to a total of 12 BRI lines, 24
analog lines, or any combination up to 24 channels).
In a full RAS 1500 stack, each PEM is connected to the RM using 3Com’s
StackNet, a high speed (up to 200 Mbps), low cost technology.
Figure 1-1
One RM and two PEMs in a Stack without a StackNet Connection