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Configuring the Switch
3-62
- PBO – Indicates the status of the power back-off mechanism (on/off). If PBO
is enabled, the power of transmission from the port will automatically be
adjusted to ensure that the signal successfully reaches the receive port.
- Rate Adaptation – The data rate on a VDSL line can be affected by factors
such as temperature, humidity, and electro-magnetic radiation. When rate
adaption is enabled, the switch will determine the optimal transmission rate for
the current conditions.
• PMS-TC
2
Status
- Reed-Solomon Errors – The number of errors in data that have been
corrected by the Reed-Solomon code.
- Interleave – Interleaving improves Reed-Solomon error correction when
there is pulse noise. A greater degree of interleaving will provide more
protection against pulse noise but will increase transmission delay and reduce
the effective bandwidth of the link. The degree of interleaving can be
increased by increasing the following parameters:
- M – The interleaving depth index.
Range: 0-64, Upstream default value: 8, Downstream default value: 16
- I – The interleaving block length.
Options: 4 or 8; Upstream default value: 8, Downstream default value: 8
2 Physical Medium Specific-Transmission Convergence
Web – Click VDSL, Port Link Status.