# DS1 Configuration

The DS1 Configuration dialog box enables you to configure the DSx interface.

## Navigation

Right-click on a DSx port, then select Configure > DS1 Configuration from the popup menu.

The following information appears:

> Interface Identifier (dsx1LineIndex)

> Description (ifDescr)

> Time Elapsed Seconds (dsx1TimeElapsed)

> Valid Intervals (dsx1ValidIntervals)

> Line Type (dsx1LineType)

> Send Code Type (dsx1SendCode)

> Circuit Identifier (dsx1CircuitIdentifier)

> Loop back Configuration (dsx1LoopbackConfig)

> Signal Mode (dsx1SignalMode)

> Transmit Clock Source (dsx1TransmitClockSource)

> Facility Data Link (dsx1Fdl)

> Interface Line Status (dsx1LineStatus)

> No Alarm Present (dsx1NoAlarm)

> Near End LOF (dsx1XmtFarEndLOF)

> NE sending AIS (dsx1XmtAIS)

> NE Signal Loss (dsx1LossOfSignal)

> E1 TS16 AIS (dsx1T16AIS)

> NE Sending Tx LOMF (dsx1XmtFarEndLOMF)

> Other Failures (dsx1OtherFailure)

> Yellow Alarm (dsx1RcvFarEndLOF)

> FE sending AIS (dsx1RcvAIS)

> Red Alarm (dsx1LossOfFrame)

> NE Looped (dsx1LoopbackState)

> FE sending TS16 LOMF (dsx1RcvFarEndLOMF)

> NE detects Test Code (dsx1RcvTestCode)

## Related Topics

> DS1 Current Statistics

> DS1 Fractional Interfaces

> DS1 Interval Statistics

> DS1 Subchannel Interfaces

> DS1 Total Statistics

### Interface Identifier (dsx1LineIndex)

The unique identifier of a DS1 interface on a managed device.

### Description (ifDescr)

The name of the interface.

### Time Elapsed Seconds (dsx1TimeElapsed)

The number of seconds that elapsed since the beginning of the current error-measurement period.

Value range is from 0 to 899.

### Valid Intervals (dsx1ValidIntervals)

The number of previous 15-minute intervals for which valid data was collected.

Value range is from 0 to 96.

### Line Type (dsx1LineType)

The type of DS1 line implementing a circuit.

The type of circuit affects the number of bits per second that the circuit can reasonably carry, as well as the interpretation of the usage and error statistics.

Values are:

other (1) |
dsx1ESF (2) | Extended SuperFrame DS1
dsx1D4 (3) | AT&T D4 format DS1
dsx1E1 (4) | CCITT Recommendation G.704 (Table 4a)
dsx1E1-CRC (5) | CCITT Recommendation G.704 (Table 4b)
dsx1E1-MF (6) | G.704 (Table 4a) with TS16 multiframing enabled
dsx1E1-CRC-MF (7) | G.704 (Table 4b) with TS16 multiframing enabled

### Send Code Type (dsx1SendCode)

The type of code sent through the DS1 interface by the device.

Values are:

dsx1SendNoCode (1) | Sending looped or normal data.
dsx1SendLineCode (2) | Sending a request for a line loopback.
dsx1SendPayloadCode (3) | Sending a request for a payload loopback.
dsx1SendResetCode (4) | Sending a loopback termination request.
dsx1SendQRS (5) | Sending a quasi-random signal (QRS) test pattern.
dsx1Send511Pattern (6) | Sending a 511 bit fixed test pattern.
dsx1Send3in24Pattern (7) | Sending a fixed test pattern of 3 bits set in 24.
dsx1SendOtherTestPattern (8) | Sending a test pattern other than those described by this object.

### Circuit Identifier (dsx1CircuitIdentifier)

The transmission vendor's circuit identifier.

Value range is 0 to 255.

### Loop back Configuration (dsx1LoopbackConfig)

The loopback configuration of the DS1 interface.

Values are:

dsx1NoLoop (1) | Not in the loopback state. A device that cannot perform a loopback on the interface always return this value.
dsx1PayloadLoop (2) | The received signal at this interface is looped through the device. Typically the received signal is looped back for retransmission after it passes through the device's framing function.
dsx1LineLoop (3) | The received signal at this interface does not go through the device (minimum penetration) but is looped back out.
dsx1OtherLoop (4) | Loopbacks that are not defined.

### Signal Mode (dsx1SignalMode)

The signaling mode of the interface.

Values are:

none (1) | No bits are reserved for signaling on the channel.
robbedBit (2) | DS1 robbed bit signaling is in use.
bitOriented (3) | E1 channel associated signaling is in use.
messageOriented (4) | Common channel signaling is in use either on channel 16 of an E1 link or channel 24 or a DS1.
other (5) |

### Transmit Clock Source (dsx1TransmitClockSource)

The source of the transmit clock.

Values are:

loopTiming (1) | The recovered receive clock is used as the transmit clock.
localTiming (2) | A local clock source is used.
throughTiming (3) | The recovered receive clock from another interface is used as the transmit clock.

### Facility Data Link (dsx1Fdl)

The use of the facilities data link (FDL).

Values are:

other (1) | A protocol other than the following is used.
dsx1Ansi-T1-403 (2) | FDL exchange recommended by ANSI.
dsx1Att-54016 (4) | ESF FDL exchanges.
dsx1Fdl-none (8) | Device does not use the FDL.

### Interface Line Status (dsx1LineStatus)

The interface line status is derived from dsx1LineStatus. It is shown as a check box on the various error status messages appearing in the line. dsx1NoAlarm should be set only if no other flag is set.

### No Alarm Present (dsx1NoAlarm)

No alarm is present.

### Near End LOF (dsx1XmtFarEndLOF)

Near end sending LOF indication.

### NE sending AIS (dsx1XmtAIS)

Near end sending AIS.

### NE Signal Loss (dsx1LossOfSignal)

Near end Loss Of Signal (LOS).

### E1 TS16 AIS (dsx1T16AIS)

E1 TS16 AIS.

### NE Sending Tx LOMF (dsx1XmtFarEndLOMF)

Near End Sending TS16 LOMF.

### Other Failures (dsx1OtherFailure)

Any line status not defined here.

### Yellow Alarm (dsx1RcvFarEndLOF)

Far end LOF.

### FE sending AIS (dsx1RcvAIS)

Far end sending AIS.

### Red Alarm (dsx1LossOfFrame)

Near end LOF.

### NE Looped (dsx1LoopbackState)

Near end is looped.

### FE sending TS16 LOMF (dsx1RcvFarEndLOMF)

Far End Sending TS16 LOMF.

### NE detects Test Code (dsx1RcvTestCode)

Near End detects a test code.