ZyXEL P-870MH-C1 User Guide - Page 68

Status > xDSL Statistics, The following table describes the labels in this screen.

Page 68 highlights

Chapter 4 Status Screens The following table describes the labels in this screen. Table 8 Status > xDSL Statistics LABEL DESCRIPTION xDSL Training This displays the current state of setting up the DSL connection. Status xDSL Profile This displays the group of DSL settings the DSL port is currently using. 0 displays if the DSL port is not currently using any group of DSL settings. Traffic Type This displays the type of traffic the DSL port is sending and receiving. Inactive displays if the DSL port is not currently sending or receiving traffic. Link Uptime This displays how long the port has been running (or connected) since the last time it was started. xDSL Port Details Upstream These are the statistics for the traffic direction going out from the port to the service provider. Downstream These are the statistics for the traffic direction coming into the port from the service provider. Line Rate These are the data transfer rates at which the port is sending and receiving data. Actual Net Data Rate These are the rates at which the port is sending and receiving the payload data without transport layer protocol headers and traffic. Trellis Coding This displays whether or not the port is using Trellis coding for traffic it is sending and receiving. Trellis coding helps to reduce the noise in ADSL transmissions. Trellis may reduce throughput but it makes the connection more stable. SNR Margin This is the upstream and downstream Signal-to-Noise Ratio margin (in dB). A DMT sub-carrier's SNR is the ratio between the received signal power and the received noise power. The signal-to-noise ratio margin is the maximum that the received noise power could increase with the system still being able to meet its transmission targets. Actual Delay This is the upstream and downstream interleave delay. It is the wait (in milliseconds) that determines the size of a single block of data to be interleaved (assembled) and then transmitted. Interleave delay is used when transmission error correction (Reed- Solomon) is necessary due to a less than ideal telephone line. The bigger the delay, the bigger the data block size, allowing better error correction to be performed. Transmit Power This is the upstream and downstream far end actual aggregate transmit power (in dBm). Receive Power Upstream is how much power the port is using to transmit to the service provider. Downstream is how much port the service provider is using to transmit to the port. Upstream is how much power the service provider is receiving from the port. Downstream is how much power the port is receiving from the service provider. 68 P-870HN-5xb User's Guide

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Chapter 4 Status Screens
P-870HN-5xb User’s Guide
68
The following table describes the labels in this screen.
Table 8
Status > xDSL Statistics
LABEL
DESCRIPTION
xDSL Training
Status
This displays the current state of setting up the DSL connection.
xDSL Profile
This displays the group of DSL settings the DSL port is currently using.
0
displays if the DSL port is not currently using any group of DSL settings.
Traffic Type
This displays the type of traffic the DSL port is sending and receiving.
Inactive
displays if the DSL port is not currently sending or receiving
traffic.
Link Uptime
This displays how long the port has been running (or connected) since
the last time it was started.
xDSL Port Details
Upstream
These are the statistics for the traffic direction going out from the port to
the service provider.
Downstream
These are the statistics for the traffic direction coming into the port from
the service provider.
Line Rate
These are the data transfer rates at which the port is sending and
receiving data.
Actual Net
Data Rate
These are the rates at which the port is sending and receiving the
payload data without transport layer protocol headers and traffic.
Trellis Coding
This displays whether or not the port is using Trellis coding for traffic it is
sending and receiving. Trellis coding helps to reduce the noise in ADSL
transmissions. Trellis may reduce throughput but it makes the
connection more stable.
SNR Margin
This is the upstream and downstream Signal-to-Noise Ratio margin (in
dB). A DMT sub-carrier’s SNR is the ratio between the received signal
power and the received noise power. The signal-to-noise ratio margin is
the maximum that the received noise power could increase with the
system still being able to meet its transmission targets.
Actual Delay
This is the upstream and downstream interleave delay. It is the wait (in
milliseconds) that determines the size of a single block of data to be
interleaved (assembled) and then transmitted. Interleave delay is used
when transmission error correction (Reed- Solomon) is necessary due to
a less than ideal telephone line. The bigger the delay, the bigger the data
block size, allowing better error correction to be performed.
Transmit
Power
This is the upstream and downstream far end actual aggregate transmit
power (in dBm).
Upstream is how much power the port is using to transmit to the service
provider. Downstream is how much port the service provider is using to
transmit to the port.
Receive Power
Upstream is how much power the service provider is receiving from the
port. Downstream is how much power the port is receiving from the
service provider.