Rbsu/Rbss Premise Wiring Guidelines - Toshiba Strata DK40 Installation & Maintenance Manual

RBSU/RBSS ISDN Basic Rate Interface Unit
Monitor Jack
The RBSU/RBSS monitor jack is an RJ-12 (6-pin modular). This jack provides an RS-232
output that enables you to monitor the RBSU/RBSS BRI circuit D-channel, layer-2 and
layer-3 data. The monitor jack pin configuration and communication parameters are the same
as RPTU which are shown in
and 3-62, respectively, show examples of the RBSU monitor jack output.
RJ45 8-pin (shielded)
Modular Connector
Reset Switch
(resets RBSU Firmware)
Figure 3-29 Location of LEDs and Connectors

RBSU/RBSS Premise Wiring Guidelines

Power Failure Terminal Screws
TB1 and TB2 are the connecting points that interface a pair of dry contacts that can be used
for power failure switching purposes
system (RBSU) has power (from AC source or batteries) there is a short circuit across TB1
and TB2. In the event of no power to the DK424, there is an open circuit across TB1 and
TB2. The specifications for TB1 and TB2 contacts are:
Strata DK40 I&M Manual Spring 1999
Refer to the Strata DK40 Programming Manual or DK Library CD-Rom for more details.
Figure 3-20 on Page
BSY
TS
CCT2
LOS
FS
BSY
CCT1
TS
LOS
FS
TB3 (FG)
RS232C Connector
for Call-Data Monitor
Maximum switchable voltage: 30 VDC
Maximum switchable current: 80mA
Short circuit resistance: Approximately 15 ohms
3-39.
RBSU
RBSS
TB1 and TB2 (PFT)
2795
(See Figure 3-29
DK40 Universal Slot PCBs
Figures 3-33 and 3-34
BSY
CCT4
TS
LOS
FS
BSY
TS
CCT3
LOS
FS
4th Circuit
2nd Circuit
3rd Circuit
1st Circuit
for the locations). When the DK
on Pages 3-61
3-55