Section 2: Components
Product Description 19
2
4 BRI Card (4BRIU) — P/N 0891007
The 4BRIU PCB provides:
● 4 2-Channel Circuits (2B + D) configured as T-Bus or S-Bus
● 64 Kb/s Clear B-Channel and 16 Kb/s D-Channel
● 4 trunk/extension status LEDs
● 1 PCB status LED
● 1 run/block switch
The BRI Interface PCB uses a single universal slot. A maximum of 15 4BRIU PCBs can be
installed. Each PCB connects to the network via an NTI Network Termination. With the maximum
number of PCBs installed, the following can be provided:
● The 4BRI provides 60 BRI circuits and 120 BRI channels.
The trunk circuit can be connected to either an ISDN trunk or ISDN telephone set, depending on
the SW102 through SW402 switch settings. When used for S-Bus, a maximum of 8 ISDN terminals
can be connected to each circuit.
Four ISDN telephone circuits (1-4) are supplied with DC power from the Aspire system.
8 BRI Card (8BRIU) — P/N 0891008
The 8BRIU PCB provides:
● 8 2-Channel Circuits (2B + D) configured as T-Bus or S-Bus
● 64 Kb/s Clear B-Channel and 16 Kb/s D-Channel
● 8 trunk/extension status LEDs
● 1 PCB status LED
● 1 run/block switch
The BRI Interface PCB uses a single universal slot. With the 8BRIU
PCBs, a maximum of 12 PCBs can be installed when used for T-Bus connections - 15 PCBs can be
installed when used for S-Bus connections. Each PCB connects to the network via an NTI Network
Termination. With the maximum number of PCBs installed, the following can be provided:
● The 8BRI, when used as T-Bus, provides 96 BRI circuits and 192 BRI channels. When used as
S-Bus, 120 BRI circuits and 240 S-Bus station ports are provided.
The trunk circuit can be connected to either an ISDN trunk or ISDN telephone set, depending on
the SW102 through SW802 switch settings. When used for S-Bus, a maximum of 8 ISDN terminals
can be connected to each circuit.
The first 4 ISDN telephone circuits (1-4) are supplied with DC power from the Aspire system. If the
last four circuits (5-8) are to be used for S-Bus, they must use ISDN telephone sets which provide
their own local power supply as the system does not provide DC power to these circuits.
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