User's Manual

Features and Benefits
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distortions. Reed-Solomon Forward Error Correction and interleaving protects against
errors due to impulse noise, and enables recovery from signal interruptions. Frequency
Division Duplexing (FDD) separates downstream and upstream channels and allows
VDSL signals to coexist with regular telephone services. A power back-off mechanism
is also implemented to reduce noise from crosstalk in line bundles.
Features and Benefits
VDSL features (Gateway side) include:
• High-speed Internet access over existing phone lines
• VDSL2 connection provides the following rate/range options (profile 30A):
• Concurrent data and telephone services over a single connection
• Always-on digital connection eliminates dial-up delays, providing transparent
reconnection when initiating a network request
• Supports ITU-T VDSL2 and interface standards
• Spectral compatibility with VDSL2, Smartphone digital PBX extensions and
narrowband interference
• Robust operation on severely distorted lines
• Supports power back-off algorithm that permits a mixed distance deployment
• Wireless 802.11b/g access point
• LEDs indicate VDSL link status, and power
• Simple plug-and-play installation
Additional VDSL2 features (Gateway side) include:
• Fast startup for quick initialization
• Trellis coding modulation for higher performance
• Seamless rate adaptation for enhanced quality in video applications
• Variable tone spacing enables best performance for long and short reach lines
• Improved framing, overhead channel, and interleaving
Gateway services include:
• Multiprotocol encapsulation of Windows NetBEUI, Novell’s IPX and TCP/IP via
bridging for complete access to corporate resources
• TCP/IP routing transport using RIP or RIP 2 for Internet access
Table 1-1 Maximum Rates and Distances
Rate Mode Max. Range
100 Mbps Downstream 200 m (656 ft)
100 Mbps Upstream