Rbuu/Rbus Interface Unit; Rbuu Installation - Toshiba STRATA CTX100 Installation And Maintenance Manual

ISDN Interfaces

RBUU/RBUS Interface Unit

Figure 5-20 Short Passive Bus
RBUU/RBUS Interface Unit
Circuits per PCB:
Interfaces with:
Older Version(s):
The Strata CTX RBUU/RBUS interface unit
TE1 or TA devices.
LEDs on the RBUU/RBUS show a continuous status of operation. Refer to
each LED's status.
Figure 5-23

RBUU Installation

Before you can begin installation of the RBUU, you may have to install the subassemblies.
➤
To install the subassemblies (RBUS)
➤
Place the RBUS card (component side facing down) onto the RBUU connectors. Apply firm,
even pressure to ensure proper seating of the connectors. The RBUS card should have been
installed at the factory.
➤
To install an RBUU PCB
1. Insert the RBUU (component side facing right) into the appropriate expansion unit slot and
apply firm, even pressure to ensure proper seating of connectors.
2. After installing the RBUU, gently pull the PCB outward. If the connectors are properly seated,
a slight resistance is felt.
5-24
ISDN Telephone
RBSU/RBSS
NT-Mode
RJ45
TR
5438
2 circuits (2B + D each circuit)
ISDN BRI U when connected to the Public Network or a BRI U-type TE-1 or TA devices
when connecting to ISDN station equipment
none
shows the location of the LEDs and connectors.
490'
TE-1 PC Card
640'
(Figures 5-21 and 5-22) supports ISDN BRI U-type
TR
Table 5-8 for a list of
Strata CTX I&M 10/02