3Com V3000 ANALOG, Installation Manual

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8
T1 D
IGITAL
L
INE
C
ARD
This chapter tells you how to install a T1 Digital Line Card. In the NBX
NetSet utility, digital line cards are referred to as either cards or boards.
The following sections describe how to add a T1 Digital Line Card
(3C10116C and 3C10116D) and how to connect to a T1 service provided
by the local telephone company:
■
Adding a T1 Digital Line Card
■
Verifying the T1 Digital Line Card
Installation Notes
■
See “NBX Licensing” on page 59 for information on the number of T1
cards supported by an NBX Network Call Processor.
■
You can choose to configure a T1 Digital Line Card to use one of two
types of signaling:
■
DS1 protocol (sometimes called Standard T1). By default, the Auto
Discover process selects DS1 as the signaling type.
■
ISDN PRI (Primary Rate Interface) signaling.
■
The 3C10116D T1 Digital Line Card can be installed at a remote
location and communicate with its NCP over a routed network. For
more information, see the
NBX Administrator’s Guide .
■
Before you install any T1 Digital Line Cards, you may want to
configure the Outdialing Prefix settings. For more information, see the
Dial Plan chapter of the
NBX Administrator’s Guide .
■
3C10116D T1 Digital Line Cards do not support DHCP lease times of
less than 20 minutes.
■
The NBX system provides E911 (emergency) connectivity if the T1
Digital Line Card is configured for ISDN PRI (Primary Rate Interface)
signaling. The system provides the calling number (ANI) so that the
emergency services personnel can determine the location of the caller
from the E911 database. You must update the CO (PSAP) databases.