Toshiba Strata DK40 - Table 3-15 RBSU;RBSS LED Indications

RBSU/RBSS ISDN Basic Rate Interface Unit DK40 Universal Slot PCBs
Strata DK40 I&M Manual Spring 1999
3-53
Refer to the Strata DK40 Programming Manual or DK Library CD-Rom for more details.
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 “Capacity and Cabinet Slot Information” on Page 3-45. After the RBSU/
RBSS is installed in the DK40 Expansion KSU cabinet, the status LEDs and connecting jacks
are positioned as shown in Figure 3-29.
Table 3-15 RBSU/RBSS LED Indications
LED Indication
BSY
Circuit Busy
ON – Any B-channel is in use.
OFF – B-channels are idle.
TS
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.
LOS
Loss of Signal
ON – A signal cannot be detected from the line.
OFF – Normal condition.
FS
Frame Alignment Alarm
ON – Frame alignment cannot be established.
OFF – Frame alignment is established.