Specifications

RADring
Installation & Operation Manual Functional Description
3/11/98 12:33 Ethernet Modules Functional Description 2-45
Independent
Multiport
Repeater
Modules
EPR-8T
The EPR-8T module is an eight 10BaseT ports repeater. It can only be
connected to a RADring hub without an Ethernet bus. The module functions
in stand alone mode as an Independent Multiport Repeater.
The EPR-8T can be connected to an additional RADring Ethernet module in
an Inter Repeater Link (IRL). Such a connection requires one crossover
cable.
The module performs an automatic partitioning and reconnection when a
port violates transmission protocols. LAN operation is not interrupted while
the module checks the affected port. Jabber lockup protection is used to
ensure that the LAN operation is not affected by the transmission of
excessively long packets. It also corrects reversed packet waveform polarity.
The EPR-8T occupies two slots and has eight screened RJ-45 connectors. The
module is connected via UTP and/or screened UTP cables. Up to 10
modules can be installed in a single hub.
EPR-4T/AUI
The EPR-4T/AUI module has four 10BaseT ports and one AUI port. It can
only be connected to a RADring hub without an Ethernet bus. The module
functions in stand alone mode as an Independent Multiport Repeater.
The EPR-4T/AUI can be connected to an additional RADring Ethernet
module in an Inter Repeater Link (IRL). Such a connection requires one
crossover cable.
The module performs an automatic partitioning and reconnection when a
port violates transmission protocols. LAN operation is not interrupted while
the module checks the affected port. Jabber lockup protection is used to
ensure that the LAN operation is not affected by the transmission of
excessively long packets. It also corrects reversed packet waveform polarity.
The EPR-4T/AUI occupies two slots and has four screened RJ-45 connectors
and one AUI DB-15 connector. The UTP ports are connected by UTP and/or
screened UTP cables and the AUI port is connected to an AUI cable or
directly to a transceiver. Up to 10 modules can be installed in a single hub.