VERSA VX-MD4024 24 Port VDSL2 IP DSLAM

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General:

• 24 xDSL subscribers lines and supports provisioning of the operation modes (VDSL2, ADSL/ ADSL2+) with a default of VDSL2 on a per port basis.
• Handshake procedure of each DMT xDSL circuit complies with ITU-T G.994.1.
• Physical layer management of each DMT xDSL circuit complies with ITU-T G.997.1.
• xDSL subscriber interfaces support the following functions:
• Upstream and downstream non-overlapped mode
• Auto retrain
• Scrambling functionality
• FEC functionality
• Trellis coding
•  Bit-swap
• Interleaving selection
• Target, maximum and minimum SNR margins programmable per port basis, independently for UP/DOWN directions
• Tx power adjustment while the SNR margin detected from the xDSL line exceeds the configured maximum SNR margin
• Supports rate adaptation modes defined in ITU-T G.992.5 and
• Line Interface (continued)
• G.997.1 including Fixed (manually configured) and Adaptive At Init modes.
• xDSL subscriber interface is able to support Fast Channel or Interleaved Channel independently for each xDSL port.
• Supports Upstream Power Back-off (UPBO) while received power exceeds configured max-aggregation-PSD in the upstream direction.
• Supports detection of Dying Gasp message from xDSL CPE and indicate a CPE power loss alarm in the management interface. This is cleared upon the commencement of a retrain operation (i.e. when the CPE becomes active once more).
• Supports PSD shaping feature in VDSL2, ADSL and ADSL2+
• Supports Downstream Power Back-Off (DPBO) for xDSL ports while operating in ADSL/2+ or VDSL2 mode