3Com 3C10122 - NBX Business Telephone, Installation Manual, Page: 37 / 252

NBX Cards and Devices 37
V5000 Gateway Chassis
The V5000 Gateway Chassis (3C10200B) contains four card slots so that
you can connect optional interface cards to your NBX system. Two
redundant uplink ports provide 10/100 Mbps switched Ethernet
connections. Use the upper port to connect to the LAN. The lower port is
normally inactive and becomes active only if the upper port experiences a
link failure. Both ports show a positive link status even though only one
port at a time is active.
CAUTION: The power cord is the disconnect device. The power outlet
must be near to the unit and easily accessible.
NBX Cards and
Devices
This section lists NBX cards available from 3Com that can you can use
with an NBX system. You install the cards in an NBX chassis.
NBX cards are hot swappable — you do not need to turn off power to
the chassis before you add or remove a card. New cards can be
configured manually or you can enable the NBX Auto Discover feature to
automatically configure a new card. For information on adding and
configuring NBX cards, see
“Using Auto Discover for Initial System
Configuration” on page 111 .
CAUTION: 3C10165D E1 Digital Line Cards and 3C10116D T1 Digital
Line Cards can have their flash memory corrupted if you remove power
from the cards or remove the cards from the NBX chassis while they are
receiving their download after a system upgrade.
Before you install any Analog Line Cards or Digital Line Cards, you may
want to configure the Dial Prefix settings. For information on this topic,
see “Dial Prefix Settings” in the
NBX Administrator’s Guide .
Analog Line Card The NBX Analog Line Card connects up to four analog telephone lines
from the Central Office (CO) to the NBX system.
Figure 7 NBX Analog Line Card (3C10114C)
3C10114C 3Com NBX Analog Line Card LS
CONSOLE
2
3
4 PFT 1
1 2 3 4