VS-2400S 24 Ports VDSL2 Managed IP DSLAM with POTS splitter USER
’S MANUAL Ver.A3
3
Attention:
Be sure to read this manual carefully before using this product. Especially Legal Disclaimer, Statement
of Conditions and Safety Warnings.
Caution:
The VS-2400S are for
indoor
applications only. This product does not have waterproof protection.
VDSL2 Brief
VDSL2
(Very-High-Bit-Rate Digital Subscriber Line 2, ITU-T G.993.2 Standard) is an access technology that exploits the existing
infrastructure of copper wires that were originally deployed for
services. It can be deployed from central offices, from fibre-fed
cabinets located near the customer premises, or within buildings.
ITU-T G.993.2 VDSL2 is the newest and most advanced standard of
broadband wireline communications. Designed to support
the wide deployment of Triple Play services such as voice, video, data, high definition television (HDTV) and interactive gaming,
VDSL2 enables operators and carriers to gradually, flexibly, and cost efficiently upgrade existing xDSL-infrastructure.
ITU-T G.993.2 (VDSL2) is an enhancement to G.993.1
that permits the transmission of asymmetric and symmetric
(Full-Duplex) aggregate data rates up to 200 Mbit/s on twisted pairs using a bandwidth up to 30 MHz.
VDSL2 deteriorates quickly from a theoretical maximum of 200 Mbit/s at 'source' to symmetric 100 Mbit/s at 0.3 km and 50 Mbit/s at
1 km, but degrades at a much slower rate from there, and still outperforms
. Starting from 1,6 km its performance is equal to
ADSL-like long reach (LR) performance: ADSL-like long reach performance is one of the key advantages of VDSL2. LR-VDSL2
enabled systems are capable of supporting speeds of around 1-4 Mbit/s (downstream) over distances of 2.5 km, gradually increasing
the bit rate up to symmetric 100Mbit/s as loop-length shortens. This means that VDSL2-based systems, unlike VDSL1 systems, are
not limited to short loops or MTU/MDUs only, but can also be used for medium range applications.
