Toshiba Strata DK40 - RBSU;RBSS Premise Wiring Guidelines

RBSU/RBSS ISDN Basic Rate Interface Unit DK40 Universal Slot PCBs
Strata DK40 I&M Manual Spring 1999
3-55
Refer to the Strata DK40 Programming Manual or DK Library CD-Rom for more details.
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 Figure 3-20 on Page 3-39. Figures 3-33 and 3-34 on Pages 3-61
and 3-62, respectively, show examples of the RBSU monitor jack output.
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 (See Figure 3-29 for the locations). When the DK
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:
◆ Maximum switchable voltage: 30 VDC
◆ Maximum switchable current: 80mA
◆ Short circuit resistance: Approximately 15 ohms
RBSU
Reset Switch
(resets RBSU Firmware)
RS232C Connector
for Call-Data Monitor
RJ45 8-pin (shielded)
Modular Connector
BSY
TS
LOS
FS
BSY
TS
LOS
FS
2795
RBSS
3rd Circuit
2nd Circuit
1st Circuit
4th Circuit
BSY
TS
LOS
FS
BSY
TS
LOS
FS
CCT2
CCT1
CCT4
CCT3
TB3 (FG)
TB1 and TB2 (PFT)