User's Manual

System Configuration
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5
• Port – Starts or stops the VDSL port.
Rate and Line Information
• BME – The number of VDSL ports supported by the BME.
• Downstream/Upstream Line Rate – This rate includes payload (user data) and
any applicable framing overhead.
• Fast Downstream/Upstream Payload Rate – The actual payload carried on the
fast channels.
• Slow Downstream/Upstream Payload Rate – The actual payload carried on the
interleaved channels.
• Downstream Attainable Payload Rate – The maximum rate that can be achieved
in the download direction. This is based on measurements made during line
probing. This rate includes payload (user data) and any applicable framing
overhead.
• Downstream Attainable Line Rate – The maximum attainable line rate on the
downstream channel.
• Downstream/Upstream Line Protection (Slow Path) – The number of additional
DMT symbols added to each packet to increase the noise margin.
• Downstream/Upstream Delay – The maximum interleave delay. Interleaving
causes a delay in the transmission of data. Interleave delay applies only to the
interleave (slow) channel and defines the mapping (relative spacing) between
subsequent input bytes at the interleaver input and their placement in the bit
stream at the interleaver output. Larger numbers provide greater separation
between consecutive input bytes in the output bit stream allowing for improved
impulse noise immunity at the expense of payload latency.
• VDSL Estimated Loop Length – Estimated length of the VDSL connection; used
to calculate power backoff.
• Ghs Estimated Near End Loop Length – Estimated length of the VDSL
connection as viewed from the input receiver on the Gateway; used for
handshaking.
• Ghs Estimated Far End Loop Length – Estimated length of the VDSL connection
as viewed from the central office; used for handshaking.
• Current Framing Mode – Indicates one of the packet framing modes (0: HDLC,
1: EFM, 2: By Pass).
• Band Plan Type –
Table 5-49 VDSL2 Band Plans
Code Band Plan
0x00 BP1_998_3
0x01 BP2_998_3
BP998_3B_8_5M