Vdsl Service - Zte zxmsg 5200 Technical Manual

Stable Running
and Frequency
Compatibility
Line Diagnosis
Function
Better
Networking
Introduction
Functions
when the transmission power is too large, ensuring the
normal receiving of data.
ADSL2+ has more stable running and frequency compatibilities,
which are as follows:
Receiver decides carrier sequence and pilot tone upon the
channel analysis. Its results can truly reflect the channel
situation and select the best tone as pilot which is useful to
stable ADSL connection.
The receiver can test RFI distribution by RFI closing tone
channels or controls the transmit power of tone through CO-
MIB. It effectively avoids RFI and reduces the interference on
ambient devices.
Fine dynamic adaptability.
The bit swapping
enhancing the adaptability to changeable line parameters.
Less time to resume connection from faults.
ADSL2+ supports test function at both ends. The following
parameter can be tested:
Line transmission feature
Background noise power spectrum
Signal-noise ratio of each sub-band
Noise tolerance and bearable bits of each sub-band
Based on different
transceivers into
convergence sub-layer), PMS-TC (physical medium related
convergence sub-layer), PMD (physical medium related sub-
layer), and MPS-TC (management protocol related convergence
sub-layer, used for NM interface). Encapsulating each sub-layer
and defining the message among sub-layers helps implementing
networking of various devices from different factories.

VDSL Service

VDSL (Very High Speed Digital Subscriber Line) provides high-
bandwidth access, applying to the transmission with symmetric
rate and asymmetric rate. VDSL transmits high-speed data
through the existing subscriber telephone line. It provides voice,
video and data through multimedia network.
VDSL transmits voice and data service simultaneously on the
same subscriber line with the Frequency Division Multiplexing
(FDM) mode. At the both ends of subscriber lines, splitter
separates the voice signal from the data signal. The VDSL band
is independent of POTS service band, therefore has no influence
on POTS service and network distribution. VDSL band is divided
into the uplink band and the downlink band. In addition, it has a
Confidential and Proprietary Information of ZTE CORPORATION
and line rate
functions, ADSL2+
TPS-TC (transmission
Chapter 3 Service Functions
changes dynamically
classifies ADSL
protocol related
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