Table 3-15 Rbsu/Rbss Led Indications - Toshiba Strata DK40 Installation & Maintenance Manual

RBSU/RBSS ISDN Basic Rate Interface Unit
Step 6: Install RBSU/RBSS PCBs into Cabinet
After setting the switches and jumpers and installing the plug-on PCBs as described in the
preceding paragraphs, the RBSU/RBSS PCBs can be installed in the appropriate slots. Refer
to RBSU/RBSS
RBSS is installed in the DK40 Expansion KSU cabinet, the status LEDs and connecting jacks
are positioned as shown in

Table 3-15 RBSU/RBSS LED Indications

LED
BSY
TS
LOS
FS
Strata DK40 I&M Manual Spring 1999
Refer to the Strata DK40 Programming Manual or DK Library CD-Rom for more details.
"Capacity and Cabinet Slot Information" on Page
Figure
Circuit Busy
ON – Any B-channel is in use.
OFF – B-channels are idle.
Timing Source
Blinking ON/OFF – The RBSU is extracting the clock from the BRI line and is the
Primary synchronization circuit for ISDN.
ON – The RBSU is the secondary (backup) synchronization circuit for the ISDN.
OFF – The RBSU is not used for ISDN synchronization.
Loss of Signal
ON – A signal cannot be detected from the line.
OFF – Normal condition.
Frame Alignment Alarm
ON – Frame alignment cannot be established.
OFF – Frame alignment is established.
3-29.
Indication
DK40 Universal Slot PCBs
3-45. After the RBSU/
3-53