Specifications

Functional Description
RADring
Installation & Operation Manual
2-4 Radring Functional Description - Token Ring 3/11/98 12:33
Stand Alone
The RADring hub can be configured as a stand-alone hub without RI or RO
modules. The ring is automatically closed by use of the back-up path on the
back plane.
A station is connected into the ring when a phantom current from the station
is detected. If the station is turned off, or the cable disconnected or faulty,
the lobe is automatically disabled. An empty slot is automatically bypassed.
In the stand-alone configuration the hub can support up to 80 UTP, STP (TL-
4/SD) or coax lobe connections and up to 40 fiber lobe connections.
Figure 2-3 Functional Diagram of a Stand-alone Hub
Multiple Rings
The RADring hub can be configured to support separate rings in two ways:
Lobe access module termination
By setting a lobe access module to be a terminating module, separation is
provided between the module group to the left (with which the access
module is associated), and the module group to the right (with which the
access module is not associated). Termination of the module provides
loopback of main to back up path in both directions. An ON/OFF jumper on
the lobe access module cards is used to set termination.
RI/RO Module Termination
By inserting one or two RI/RO modules between two groups of lobe access
modules two separate rings are automatically formed.