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The XDL-2420R helps service providers to easily provide high bandwidth demanded triple-play services such as IPTV, HDTV,
Video Phone and Internet Gaming at the same copper line and uplink to the core / metro Ethernet network through the two
Gigabit fiber optical interfaces. It is an ideal CO solution for FTTx last mile applications of broadband access by ISPs,
Telecoms and campuses.
Comprehensive and Advanced VDSL2 / ADSL2+ Configuration
For the bandwidth and distance of broadband access, the XDL-2420R IP-DSLAM supports multiple selective VDSL2 profiles
(8a, 8b, 8c, 8d, 12a, 12b, 17a and 30a), 997/998 Band plan and ADSL ITU-T G.993.1, ITU-T G.992.3, ITU-T G.992.5, Annex
A/B/L/M transmission modes to each subscriber line. Furthermore, it can be configured on a per-link basis for transmission
mode, rate limitation, INP (impulse noise protection) and SNR (signal-to-noise) margin. These advanced xDSL functionalities
help service providers to adjust the line performance and build a stable and reliable IP DSLAM solution.
Extremely Reliable Design to Ensure Continuous Operation
The XDL-2420R supports the SELT (Single-ended loop testing) and dual power inputs system. SELT, like metallic testing from
POTS world, is an automated way of testing a DSL loop from one end to the line, either from the central office (CO) or, less
likely from the subscriber's end. Unlike dual-end loop testing (DELT), where someone must install some sort of test device at
customer's end of the line, SELT doesn't require a technician or any equipment at the subscriber site.
The XDL-2420R is equipped with one 100~240V AC unit and one -48V DC power supply unit. Dual power systems offer more
power deploy flexibility, and the -48V DC power supply implemented makes the XDL-2420R IP DSLAM as a telecom level
device that can be located at the electronic room.
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