Page 3-135
Installation
INTER-TEL
®
AXXESS
®
MANUAL VERSION 11.0 – May 2008
BRU Ports Programmed as Station Ports
INSTALLATION
3
BRU Ports Programmed as Station Ports
10.59 The following is an example of the termination between a BRU (U) station port and a
BRI ISDN (U) device using two-wire connection.
• The BRU ports are programmed or equipped as station ports. The station ports are con-
nected to an ISDN device that has an built-in NT1 or U interface.
• A BRU Port is programmed or equipped as a station port that provides dial tone to the
other ISDN device (BRI station to BRI trunk) using a U interface.
Figure 3-68. BRU Station/Station Port to a BRI ISDN Device
NOTE: BRI U interface is not polarity sensitive. BRU card has a built-in NT1 on each
port. Therefore, an external NT1 is not required.
Terminal Endpoint Identifier (TEI)
10.60 With BRI ISDN, the Terminal Endpoint Identifiers (TEIs) are a number that identifies a
specific connection endpoint within a service access point. In other words, a unique number
assigned to identify an ISDN device on the ISDN bus. The configuration of the TEIs is very
important when using a point-to-multi point and a point-to-point.
NOTE: The system supports point-to-point and point-to-multipoint applications only. For infor-
mation purposes, a brief description of passive bus configuration is provided below to help with
explaining the TEIs.
BRU CARD
ISDN DEVICE
TIP
RING
TIP
RING
U Interface
BRU Port (programmed as a station port)
Table 3-18. Terminal Endpoint Identifier (TEI)
TEI Value User TE Type
0-63 Non-Automatic TEI Assignment for the Equipment
64-126 Automatic TEI Assignment for the Equipment
127 BroadCast TEI
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