iPECS-MG
Hardware Description and Installation Manual Issue 1.1
42
5.3.2 BRIB (Basic Rate Interface Board) w/Selectable S/T Interface
There are two kinds of BRIB2/BRIB4 according to CPU, but they have the same functions.
The BRIB is available in two models, the BRIB2 with two (2) BRI lines (4 channels) and the
BRIB4 with four (4) BRI lines (8 channels). The BRIB is compatible with ETSI 300.012 and ITU-
T recommendations I.430 supporting S (Subscriber) or T (Trunk) interfaces. As shown in Figure
5.3.2.1, the S interface of the BRIB acts as the NT (Network Termination) connecting to TEs
(Terminal Equipments) and can provide power feed (-40VDC) to the attached TEs (maximum
eight TEs). A 100-ohm Terminating Resistor can be inserted across the TX and/or RX pair.
When used, a 100-Ohm terminating resistor should be connected across the TX and RX pair at
one of the TEs.
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