ADTRAN
TDU 120AC
| Card Type | T1 DSU/CSU |
| Chip Set | Unidentified |
| I/O Options | Test jacks - in (2), test jacks - out (2), test jacks - monitor (4), RJ-48 control ports (3), T1 network interface via RJ-48, V.35 port |
| T1 Data Rate | 1.544Mbps |
| Line Coding | AMI, B8ZS |
| Framing | D4, ESF |
| Data Bus | External |
CONNECTIONS |
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Function |
Label |
Function |
Label |
| T1 network port via RJ-48 | CN1 |
Test jack - out | CN9 |
| Control port - chain in via RJ-48 | CN2 |
Test jack - monitor | CN10 |
| Control port - chain out via RJ-48 | CN3 |
Test jack - in | CN11 |
| DSX-1 DTE port | CN4 | Test jack - out | CN12 |
| V.35 port | CN5 |
Test jack - monitor | CN13 |
| Control port - chain in via RJ-48 | CN6 | Test jack - monitor | CN14 |
| Test jack - monitor | CN7 | Reset switch | SW1 |
| Test jack - in | CN8 | ||
DIAGNOSTIC LED(S) |
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LED |
Color |
Status |
Condition |
| AIS | Red | On | Unframed all ones being received at the network interface |
| AIS | Red | Off | Unframed all ones not being received at the network interface |
ALM1 |
Red |
On |
Alarm condition has been detected on DSU port 1 |
ALM1 |
Red |
Off |
Alarm condition has not been detected on DSU port 1 |
ALM2 |
Red |
On |
Alarm condition has been detected on DSU port 2 |
ALM2 |
Red |
Off |
Alarm condition has not been detected on DSU port 2 |
ALM3 |
Red |
On |
Alarm condition has been detected on Module port 1 |
ALM3 |
Red |
Off |
Alarm condition has not been detected on Module port 1 |
ALM4 |
Red |
On |
Alarm condition has been detected on Module port 2 |
ALM4 |
Red |
Off |
Alarm condition has not been detected on Module port 2 |
ALM5 |
Red |
On |
Alarm condition has been detected on Module port 3 |
ALM5 |
Red |
Off |
Alarm condition has not been detected on Module port 3 |
ALM6 |
Red |
On |
Alarm condition has been detected on Module port 4 |
ALM6 |
Red |
Off |
Alarm condition has not been detected on Module port 4 |
LOS |
Red |
On |
Network signal is lost |
LOS |
Red |
Off |
Network signal is not lost |
OK1 |
Green |
On |
CSU is operating in normal mode. No errors have been detected |
OK1 |
Green |
Off |
CSU is not in normal mode, or errors have been detected |
OK2 |
Green |
On |
DSU port 1 is operating in normal mode. No errors have been detected |
OK2 |
Green |
Off |
DSU port 1 is not in normal mode, or errors have been detected |
OK3 |
Green |
On |
DSU port 2 is operating in normal mode. No errors have been detected |
OK3 |
Green |
Off |
DSU port 2 is not in normal mode, or errors have been detected |
OK4 |
Green |
On |
Module port 1 is operating in normal mode. No errors have been detected |
OK4 |
Green |
Off |
Module port 1 is not in normal mode, or errors have been detected |
OK5 |
Green |
On |
Module port 2 is operating in normal mode. No errors have been detected |
OK5 |
Green |
Off |
Module port 2 is not in normal mode, or errors have been detected |
OK6 |
Green |
On |
Module port 3 is operating in normal mode. No errors have been detected |
OK6 |
Green |
Off |
Module port 3 is not in normal mode, or errors have been detected |
OK7 |
Green |
On |
Module port 4 is operating in normal mode. No errors have been detected |
OK7 |
Green |
Off |
Module port 4 is not in normal mode, or errors have been detected |
| RED | Red |
On |
Unable to frame to data coming in the network interface |
| RED | Red |
Off |
Able to frame to data coming in the network interface |
TST1 |
Yellow |
On |
CSU is conducting a test |
TST1 |
Yellow |
Off |
CSU is not conducting a test |
TST2 |
Yellow |
On |
DSU port 1 is conducting a test |
TST2 |
Yellow |
Off |
DSU port 1 is not conducting a test |
TST3 |
Yellow |
On |
DSU port 2 is conducting a test |
TST3 |
Yellow |
Off |
DSU port 2 is not conducting a test |
TST4 |
Yellow |
On |
Module port 1 is conducting a test |
TST4 |
Yellow |
Off |
Module port 1 is not conducting a test |
TST5 |
Yellow |
On |
Module port 2 is conducting a test |
TST5 |
Yellow |
Off |
Module port 2 is not conducting a test |
TST6 |
Yellow |
On |
Module port 3 is conducting a test |
TST6 |
Yellow |
Off |
Module port 3 is not conducting a test |
TST7 |
Yellow |
On |
Module port 4 is conducting a test |
TST7 |
Yellow |
Off |
Module port 4 is not conducting a test |
| YEL | Yellow | On | Remote alarm indication is being received from network |
| YEL | Yellow | Off | Remote alarm indication is not being received from network |