Visara CCA-3074 Planning Guide - Manual (Page 10)

Chapter 1. Installation
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Optional CSS32 Coax Subsystem
The optional CSS32 Coax Subsystem can be added to the CCA-3074 to provide up to 32
real coax ports for attachment of 3270 displays, printers, and Storagetek coax LMU
connections.
The CSS32 comes in a separate rack mountable platform which can be mounted in the
same physical rack as the CCA-3074 and interconnected by a single crossover Ethernet
cable. Multiple CSS32 platforms can be supported by a single CCA-3074. In instances
where multiple CSS32 platforms are to be supported, it may be necessary to use a small
Ethernet hub or switch to interconnect the multiple platforms. It is also possible to
directly attach multiple CSS32 platforms by adding a Quad Ethernet interface card into
the CCA-3074.
The CSS32 may similarly be attached to multiple CCA-3074 platforms. Because
communication between CSS32 and CCA-3074 uses standard Ethernet IP connections it
is possible for a CCA-3074 to communicate to a CSS32 platform over an IP network. The
CSS32 does not natively support SSL encryption, so external SSL encryption or VPN is
recommended to provide security when direct crossover connections are not used.
The CSS32 comes standard preconfigured to communicate with one CCA-3074. In the
factory default configuration, 31 coax ports are defined to support displays or LMU
connections and 1 coax port is defined to support a printer. The factory configuration can
be modified to support other combinations of devices and destination platforms.