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# ADC KENTROX
DATASMART MODELS 7856X, 7876X
Card Type T1 CSU/DSU
Chipset Unidentified
T1 Transfer Rate 1.544Mbps
T1 Protocol Unidentified
Frame Type Unidentified
Data Bus Serial
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------------+-------+-------------------+-------|
| Monitor receive | CN1 | V.35 serial data | CN8 |
| equalization in jack | | port 1 | |
|------------------------+-------+-------------------+-------|
| Monitor receive | CN2 | V.35 serial data | CN9 |
| network out jack | | port 2 | |
|------------------------+-------+-------------------+-------|
| Monitor monitor jack | CN3 | V.24 DCE serial | CN10 |
| | | control port | |
|------------------------+-------+-------------------+-------|
| Monitor transmit | CN4 | V.24 DTE serial | CN11 |
| equalization out jack | | control port | |
|------------------------+-------+-------------------+-------|
| Monitor transmit | CN5 | AC or DC power in | CN12 |
| network in jack | | (depends on | |
| | | model) | |
|------------------------+-------+-------------------+-------|
| Monitor transmit | CN6 | T1 line out | CN13 |
| monitor jack | | | |
|------------------------+-------+-------------------+-------|
| Auxiliary jack (see | CN7 | Alarm cutoff | S3 |
| pinout below) | | switch | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CN1 PINOUT |
|------------------------------------------------------------|
| Function | Pin | Function | Pin |
|---------------------+-----+--------------------------+-----|
| Positive external | 1 | Not used | 6 |
| clock in | | | |
|---------------------+-----+--------------------------+-----|
| Negative external | 2 | Alarm signal common | 7 |
| clock in | | | |
|---------------------+-----+--------------------------+-----|
| Chassis ground | 3 | Normally open alarm | 8 |
| | | contact | |
|---------------------+-----+--------------------------+-----|
| Signal ground | 4 | Normally closed alarm | 9 |
| | | contact | |
|---------------------+-----+--------------------------+-----|
| Unbalanced external | 5 | | |
| clock in | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| THUMBWEEL FUNCTION SELECTION |
|------------------------------------------------------------|
| Function | S1 | S2 | S3 |
|-------------------------------+----------+--------+--------|
| Reset loopback tests | Position | Pushed | Not |
| | 0 | | pushed |
|-------------------------------+----------+--------+--------|
| Begin remote line loopback | Position | Pushed | Not |
| test | 1 | | pushed |
|-------------------------------+----------+--------+--------|
| Unidentified | Position | Pushed | Not |
| | 2 | | pushed |
|-------------------------------+----------+--------+--------|
| Reset to factory defaults and | Position | Pushed | Pushed |
| switch settings | 3 | for 2 | for 2 |
| | | sec. | sec. |
|-------------------------------+----------+--------+--------|
| Unidentified | Position | Pushed | Not |
| | 3 | | pushed |
|-------------------------------+----------+--------+--------|
| Begin near-end line loopback | Position | Pushed | Not |
| test | 4 | | pushed |
|-------------------------------+----------+--------+--------|
| Begin near-end payload | Position | Pushed | Not |
| loopback test | 5 | | pushed |
|-------------------------------+----------+--------+--------|
| Send QRST test code | Position | Pushed | Not |
| | 8 | | pushed |
|-------------------------------+----------+--------+--------|
| Send 3 in 24 test code | Position | Pushed | Not |
| | 9 | | pushed |
|------------------------------------------------------------|
| Note:S2 and S3 must always be held for at least |
| one-half of one second for the above functions to |
| take effect. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|------+--------+----------+---------------------------------|
| TXD1 | Yellow | On | Data port 1 is receiving data |
| | | | from network |
|------+--------+----------+---------------------------------|
| TXD1 | Yellow | Off | Data port 1 is not receiving |
| | | | data from network |
|------+--------+----------+---------------------------------|
| RXD1 | Yellow | On | Data port 1 is transmitting |
| | | | data to network |
|------+--------+----------+---------------------------------|
| RXD1 | Yellow | Off | Data port 1 is not transmitting |
| | | | data to network |
|------+--------+----------+---------------------------------|
| CTS1 | Yellow | On | Data port 1 CTS is high |
|------+--------+----------+---------------------------------|
| CTS1 | Yellow | Off | Data port 1 CTS is low |
|------+--------+----------+---------------------------------|
| RTS1 | Yellow | On | Data port 1 RTS is high |
|------+--------+----------+---------------------------------|
| RTS1 | Yellow | Off | Data port 1 RTS is low |
|------+--------+----------+---------------------------------|
| TXD2 | Yellow | On | Data port 2 is receiving data |
| | | | from network |
|------+--------+----------+---------------------------------|
| TXD2 | Yellow | Off | Data port 2 is not receiving |
| | | | data from network |
|------+--------+----------+---------------------------------|
| RXD2 | Yellow | On | Data port 2 is transmitting |
| | | | data to network |
|------+--------+----------+---------------------------------|
| RXD2 | Yellow | Off | Data port 2 is not transmitting |
| | | | data to network |
|------+--------+----------+---------------------------------|
| CTS2 | Yellow | On | Data port 2 CTS is high |
|------+--------+----------+---------------------------------|
| CTS2 | Yellow | Off | Data port 2 CTS is low |
|------+--------+----------+---------------------------------|
| RTS2 | Yellow | On | Data port 2 RTS is high |
|------+--------+----------+---------------------------------|
| RTS2 | Yellow | Off | Data port 2 RTS is low |
|------+--------+----------+---------------------------------|
| DATA | Green | On | Valid data signal detected on |
| | | | T1 interface |
|------+--------+----------+---------------------------------|
| DATA | Green | Blinking | Network Set, Reset, or Test |
| | | | code detected on T1 interface |
|------+--------+----------+---------------------------------|
| DATA | Green | Off | No valid signal detected on T1 |
| | | | interface |
|------+--------+----------+---------------------------------|
| CV | Red | On | Code Violation error detected |
| | | | on T1 interface |
|------+--------+----------+---------------------------------|
| CV | Red | Off | Code Violation error not |
| | | | detected on T1 interface |
|------+--------+----------+---------------------------------|
| LOS | Red | On | Loss Of Signal condition |
| | | | detected on T1 interface |
|------+--------+----------+---------------------------------|
| LOS | Red | Off | Loss Of Signal condition not |
| | | | detected on T1 interface |
|------+--------+----------+---------------------------------|
| OOF | Red | On | Signal is out of frame |
| | | | synchronization on T1 interface |
|------+--------+----------+---------------------------------|
| OOF | Red | Off | Signal is not out of frame |
| | | | synchronization on T1 interface |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) (CON’T) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|------+--------+----------+---------------------------------|
| AIS | Red | On | Alarm Indication Signal |
| | | | condition detected on T1 |
| | | | interface |
|------+--------+----------+---------------------------------|
| AIS | Red | Blinking | Alarm Indication Signal being |
| | | | transmitted to T1 interface |
|------+--------+----------+---------------------------------|
| AIS | Red | Off | Alarm Indication Signal |
| | | | condition not detected on T1 |
| | | | interface |
|------+--------+----------+---------------------------------|
| YEL | Yellow | On | Remote Yellow Alarm condition |
| | | | detected on T1 interface |
|------+--------+----------+---------------------------------|
| YEL | Yellow | Blinking | Local Yellow Alarm condition |
| | | | detected on T1 interface |
|------+--------+----------+---------------------------------|
| YEL | Yellow | Off | Yellow Alarm condition not |
| | | | detected on T1 interface |
|------+--------+----------+---------------------------------|
| PWR | Green | On | Power is on |
|------+--------+----------+---------------------------------|
| PWR | Red | On | Self-test failed |
|------+--------+----------+---------------------------------|
| PWR | Red | Blinking | Serious problem has occurred |
|------+--------+----------+---------------------------------|
| PWR | N/A | Off | Power is off |
|------+--------+----------+---------------------------------|
| LOOP | Yellow | On | Local loopback test in progress |
|------+--------+----------+---------------------------------|
| LOOP | Yellow | Blinking | Remote loopback test in |
| | | | progress |
|------+--------+----------+---------------------------------|
| LOOP | Yellow | Off | Loopback test not in progress |
|------+--------+----------+---------------------------------|
| SEND | Yellow | On | Test code being sent |
|------+--------+----------+---------------------------------|
| SEND | Yellow | Blinking | Remote loopback test may be in |
| | | | progress but cannot be verified |
|------+--------+----------+---------------------------------|
| SEND | Yellow | Off | Test code not being sent |
|------+--------+----------+---------------------------------|
| ALM | Red | On | Alarm condition detected and |
| | | | awaiting user intervention |
|------+--------+----------+---------------------------------|
| ALM | Green | On | Alarm condition detected; user |
| | | | intervention in progress |
|------+--------+----------+---------------------------------|
| ALM | Red | Blinking | Serious problem has occurred |
|------+--------+----------+---------------------------------|
| ALM | N/A | Off | Alarm condition not detected |
+------------------------------------------------------------+