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G.SHDSL Port Details window 118
Models 2616RC, 3096RC & 3196RC Admin Reference Guide 9 • G.SHDSL (Model 3096RC)
• DPLL Locked (gshDSLDPLLLocked)—Indicates whether the DSL port’s internal clock generator is phase-
locked with its external reference clock. One of the following values will be displayed:
- locked(1)
- notLocked(0)
Fifo Info table
Each G.SHDSL port’s data transceiver uses a first-in first-out (FIFO) queuing mechanism. The Fifo Info table
provides statistics pertaining to FIFO queue operation. Current values of the following counters are shown:
• Rx Fifo Errors (gshDSLRxFifoErr)—Indicates the number queuing errors in the FIFO receive queue since
the since the counter was last reset.
• Tx Fifo Errors (gshDSLTxFifoErr)—Indicates the number queuing errors in the FIFO transmit queue
since the since the counter was last reset.
• Rx Fifo Overflow (gshDSLRxFifoOverflowErr)—Indicates the number of times a queue overflow occurred
in the FIFO receive queue since the since the counter was last reset.
• Tx Fifo Overflow (gshDSLTxFifoOverflowErr)—Indicates the number of times a queue overflow occurred
in the FIFO transmit queue since the since the counter was last reset.
• Tx Stuff Errors (gshDSLTxStuffError)—Indicates the number of transmit stuffing errors since the since
the counter was last reset.
Note
A burst of errors typically occurs during port activation. Five seconds
after the port enters dataMode(1) the T-DAC will reset the statistical
error counters to zero in order to clear these expected startup errors.
The port error counts accumulate from that point forward. Each time
you click the Clear Errors button the T-DAC will clear all errors for
this port, resetting the counters to zero.
Data Path Info table
The Data Path Info table displays the current values of the following G.SHDSL port statistics variables:
• CRC Errors (gshDSLCRCErrors)—Indicates the number of Cyclical Redundancy Check (CRC) errors on
this port since the counter was last reset.
• Test Pattern Errors (gshDSLPattErrorCnt)—Indicates the number of test pattern errors detected on this
port. Valid only when the port is defined to be in one of the test modes.
• Link Drops (FLAPs) (gshDSLFlapCnt)—Indicates the number of times the link has flapped (gone down
and come back up again) since the counter was last reset.
• Loss of Delineation (gshDSLLOCDelineation)—Indicates the number of times since the counter was last
reset that the G.SHDSL framer has lost track of the delineation (frame boundary) between G.SHDSL
frames.
• Noise Margin (dB) (DSLNoiseMargin)—Indicates the most recently calculated noise margin in dB for the
port. The T-DAC re-calculates this value every 2 seconds. To update the value click the click the refresh cur-
rent page button.