5
Section 61180405L1-5, Issue 1
61180405L1-5A
LED Indication
The Total Access 1500 FT1 DP has five front panel
LEDs that indicate operational status.
Table 3
defines
these LEDs.
3. CONNECTIONS
The FT1 DP occupies two card slots in a Total Access
1500 shelf. Power and signaling are provided to the
card through the backplane of the channel bank.
4. DSL SYSTEM TESTING
The ADTRAN DSL system provides extensive ability
to monitor the status and performance of the DS1
signals and DSL loop signals. These features are
valuable in troubleshooting and isolating any system
level problems that may occur at installation or during
operation of the FT1 HDSL system. The following
paragraphs describe additional testing features
conducted with the front panel bantam jacks as well
as other front panel features.
Table 3. Front Panel LEDs and Switches
Description
Indicates Status
Green ....................... Normal operating condition
Yellow
.....................
Local (FT1 DP) loopback is active
Yellow (Flashing)... FNID or repeater is in loopback
Indicates the quality of the DS1 signal
Green ....................... The customer-side DS1 signal is present and synchronized
Yellow ..................... Yellow alarm at customer side DS1
Red ........................... No customer DS1 input signal present (T1LOS) or excessive Frame Bits
Error/Loss of frame synchronization
Flashing ................... Indicates an error has been detected at FNID input
Indicates the quality of the DSL signal
Red ........................... No synchronization of FT1 DP and FNID
Yellow ..................... Poor signal quality (> 10
-7
BER)
Green ....................... Good signal quality (> 2 dB margin above > 10
-7
BER)
Flashing ................... An error detected on the loop will cause this LED to flash briefly
Sealing Current
OFF = No sealing current
ON = Sealing current
Option Set Source
OFF .......................... Unit is operating from DIP switch settings
ON ........................... Unit has been remotely provisioned
Selects number of DS0 channels
Refer to
Installation
section for time slot allocation description.
Indicator
STAT ......................
DS1 .........................
DSL ........................
SX ...........................
REM .......................
Rotary Switch .........
