Specifications

SHUB8 2-9
Chapter 2 - System Components
SHUB8
The Switching Hub Module (SHUB8) has eight LAN ports and an UPLINK LAN port, all of
which employ Ethernet switching. All ports support Auto-sense 10/100Mbps and half/full
duplex mode. The SHUB8 is a standard nine-port Ethernet switch, which switches packets
between two specified ports. Unlike a repeater that repeats each packet to all ports, using
the SHUB8 minimizes traffic over each port as well as the overall LAN environment.
The eight LAN ports of SHUB8 are equipped with circuitry to provide power (48 VDC) to
the IP Keyset or DSS console through the LAN cable. The power-feed circuitry is
controlled manually by a DIP-switch on the front of the SHUB8. Note the UPLINK LAN port
is not equipped with the power feed circuitry.
Front Panel
Front PanelFront Panel
Front Panel
The front panel of the SHUB8 has:
Rear Panel
Rear PanelRear Panel
Rear Panel
On the rear panel, the SHUB8 has:
Figure 2-6: SHUB8 Front & Rear Panels
Caution: The power feed provided by the SHUB8 will cause damage to other LAN
devices. Prior to switching any of the DIP-switches “ON”, assure that only an IP Keyset
or DSS console is connected to the SHUB8 switched LAN port.
Power jack for the AC/DC adapter supplied
with the SHUB8
Power status LED
Eight-position DIP-switch, controls power to
each of the eight hub ports
RJ-45 Female “UPLINK” LAN connector with
Speed and Link/Activity LEDs
Eight RJ-45 Female LAN connectors with
Speed and Link/Activity LEDs, one per port
DB-9 RS-232 Serial port connector
Ground Lug
50-pin back plane connector.