ZyXEL Communications P-870M-lx v2 Series Manuel d'utilisateur Page 11

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End-to-end VDSL2 Solutions
1. VDSL2 17a Solution
2. VDSL2 30a Solution
VDSL2 17a, 100/50 Mbps VDSL2 Solution
The ZyXEL VDSL2 technology supports a wide range of
triple-play service deployments such as voice, video, data,
high-definition television (HDTV) and interactive gaming. It
also enables operators and carriers to upgrade the existing
xDSL infrastructure gradually and flexibly with limited cost.
The maximum downstream bandwidth is 100 Mbps and the
maximum upstream bandwidth is 50 Mbps.
Very-High-Bit-Rate Digital Subscriber Line 2 (VDSL2), or
G.993.2, is one of the most popular standards of the xDSL
family and widely deployed broadband technology. It
allows telecom operators around the world to provide
services such as High Definition TV (HDTV), video-on-
demand, videoconferencing, high-speed Internet access
and advanced voice services, including VoIP, over a standard
copper telephone cable.
VDSL2 includes all the technical prerequisites to address
the backward-compatibility issues of the traditional ADSL
technology. VDSL2 offers telecom carriers a solution that
promises to be interoperable with the ADSL kit that many
operators already have in place. This interoperability will
make customer migration to VDSL2 much easier.
VDSL2 gives consumers speeds of up to 100 Mbps upstream
and downstream at 700 feet and 20-30 Mbps between 2500
to 4000 feet. VDSL2 is an ideal solution to work with the FTTP
(Fiber to the Premises) rollout; for instance, fiber is supplied
directly to an apartment block and copper cable is used to
supply residents with high-speed VDSL2 from there on. It is
also a perfect solution for the last-mile of FTTx deployments
by connecting to remote MSAN (Multiple Service Access
Nodes) via fiber optics interfaces.
Benefits:
Offers 100/50 Mbps (17a) and 100/100 Mbps (30a)
bandwidth to fulfill next-generation broadband
access requirements
True DSL technology to offer multiple HD IPTV
services simultaneously for a digital home user
Backward compatible with the existing xDSL family
Best-effort solution eliminates the last-mile
bottlenecks for FTTx solutions
VDSL2 30a, 100/100 Mbps VDSL2 Solution
The VDSL2 30a profile technology is the best solution as a
part of FTTB, FTTC and FTTN. Now the fiber reach range can
be 10km, 20km or up to 60km, and it is the most effective
and low-OPEX approach by integrating the last-mile legacy
copper lines and boosts its bi-directional bandwidth up to
100 Mbps.
ZyXELs VDSL2 solution serves as the ideal xDSL technology
for eliminating last-mile bottlenecks, enabling mass
deployment of triple-play services by TR069 for easy
management and allowing carriers to efficiently compete
with cable providers. VDSL2 provides high data rates of up
to 100Mbps symmetrically that are already a mandatory
requirement in many regions for service upgrades.
ZyXEL also provides access equipments of central MSAN,
remote IP DSLAM, environment-hardened to fit in VDSL2
transmission with a series of models in various scenarios;
in addition, with its enhanced long loop reach capabilities,
the VDSL2 system can cover more than 90% of the
households within the POTS network.
ZyXEL is the worlds number-one VDSL CPE vendor since
2008, and the company also offers the second-generation
end-to-end VDSL2 30a solutions on the market in Q2,
2010. The second-generation solutions will offer more
competitive features (such as power management). Please
refer to the application diagram and supported product
tables for details.
ZyXEL is the worlds number-one VDSL CPE vendor since
2008. Please refer to the application diagram and supported
product tables for details.
Figure 4-1: VDSL2 Profile of 17a and 30a
Figure 4-2: ZyXEL VDSL2 17a Solution
Profile 17a 30a
Bandwidth (MHz) 17.664 30
Tones 4096 3479
Tone Spacing (kHz) 4.3125 8.625
Line Power (dBm) 14.5 14.5
FTTC
FTTB
FTTN
VDSL2 GW
P-870H Series
VDSL2 IAD
P-2802 Series
Street Cabinet
Temperature-Hardened
Remote DSLAM
VES-1624FT Series
VDSL2 GW/IAD
P-870 Series/
P-2802 Series/
P-2812 HNU
Temperature-Hardened
Remote MSAN
VES-1624FT Series
Environmental-Hardened
Remote DSLAM
VES-1616FE Series
VDSL2 GW
P-870 Series
L3 Gigabit
Switch
CO MSAN
IP Core
Network
IES-6000/
IES-5000
XGS-4728F
2120
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