8-Port Hub Card; Business Telephone; Dss/Blf Adjunct - 3Com NBX 100 Installation Manual

26 C 1: I
HAPTER NTRODUCTION

8-Port Hub Card

Business Telephone

DSS/BLF Adjunct

The NBX 100 Hub card provides eight 10BASE-T ports to connect
telephones (or other 10BASE-T devices) to the LAN. The card also has a
10BASE2 connection to allow you to connect to another hub or switch.
(Although cards within a single chassis have LAN connections to each
other through the chassis backplane, you can use the 10BASE2
connection in a hub to connect additional NBX 100 chassis.)
If you use the 10BASE2 connector, be sure to provide a terminator and to
program the switch or router on the other end for 10BASE-T half-duplex
operation.
Figure 9 NBX 100 8-Port Hub Card
The NBX 100 8-Port Hub card contains the following LEDs and
connectors:
LEDs (PWR and 1 through 8) These lights indicate the status of
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power to the hub and the status of the 8 10BASE-T ports.
BNC 1082 (Coax) Connector This connects the NBX 100 to external
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hubs/switches.
Ethernet Hub Ports (8) These UTP RJ45 jacks connect devices to the
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LAN.
See "Testing the Installed Hardware" in Chapter 3 for information about
what the LEDs indicate during system startup and operation.
The Business Telephone (Figure 10) provides the familiar features of a
business telephone and extra features such as one-touch access to voice
mail. The telephone contains an Ethernet 10BASE-T hub with two ports.
One port connects the telephone to the LAN and the other port can be
used to connect the computer to the LAN. Programmable Access buttons
allows personal and system-wide settings.
The optional DSS/BLF (Direct Station Select/Busy Line Flashing) adjunct (at
right in Figure 10) provides attendant (receptionist) access and
monitoring for up to 100 extensions.