Inter-Tel AXXESS Manual page 595

•
U Interface (User Interface): A connection coming into the system from an external
transmission system (ISDN provider), which is typically a Central Office [local
exchange]. (BRI U interface is a two-wire connection and PRI U interface is a four-wire
connection.) All BRI ISDN devices with a U interface normally have an NT1 built-in to
interface directly to the Network (ISDN provider or Central Office/Local Exchange).
•
T Interface (Trunk Interface): A four-wire connection between the NT1 that termi-
nates the transmission coming from the Central Office [local exchange] and the NT2
that connects to the user's TE. This interface is located at the customer site.
•
S Interface (Station Interface): A four-wire connection between the NT2 and the
user's TE. This interface is located at the customer site.
•
S/T Interface (Station/Trunk Interface): Because the BRI Station card (BRS) can be
programmed for either a station port (S) or a trunk port (T) the interface, it is referred to
as the S/T Interface.
10.56 The following programming is required to use the BRI feature:
Make sure the Advanced CO Interface premium feature is licensed. If this feature is not
1.
enabled, the warning message "Online Ignored for Board - Check Advanced CO Inter-
faces" appears in Message Print when the card is installed. (see
GRAMMING). If this occurs, upload a software license that supports this premium
feature.
Choose a slot and equip it for either a BRS or BRU card using System\Cabinets in DB
2.
Programming. (see
In DB Programming, equip the ports to be either station or trunk ports. Leave unused
3.
ports set to
Program the PRI or BRU ports for either BRI station or BRI trunks depending on the
4.
device being installed.
Program the established BRI station and trunk ports.
5.
Program the individual BRI devices.
6.
NOTE:
Program the reference clock information for each of the BRI trunk ports in System\Cab-
7.
inets\Reference Clock List.
Install the BRS cards in the selected slot in the equipment chassis, and connect the
8.
external power supply, if required. Also connect the 50-pin Amp connection to the front
of the card and terminate the cable to the MDF (Main Distribution Frame). (see
131
Install the BRU card in the selected slot in the equipment chassis, and connect the 50-
9.
pin Amp connection to the front of the card, and then terminate the cable to the MDF.
Connect the individual BRI devices to the chosen ports.
10.
NOTE:
Network Clock Card (NCC) must also be installed. If the system uses a CPC, however,
a NCC is not required.
Basic Rate Interface Terminology
®
INTER-TEL
page 6-136 in PROGRAMMING)
.
None
Refer to the manufacturer's manual for the external device being installed.
in INSTALLATION)
If a BRS or BRU card is installed on a system using CPU 128 or CPU 64, a
®
AXXESS MANUAL VERSION 11.0 – May 2008
System Features
page 6-97 in PRO-
page 3-
Page 5-69
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