GEPON is the most widely deployed and matured technology
with advantages like easy management, cost effectiveness
and easy sharing. It is a good solution for FTTH applications.
MSOs can use its RFoG (RF-over-Glass) feature as their next-
generation cable PON to upgrade broadband bandwidth
and expand customer base.
Today’s service providers are demanding larger bandwidth
for subscribers to offer HDTV, MoD, VoIP and online gaming
services. The options for service providers to deliver decent
bandwidth are still dependent to the mixed network
architecture, and the demands are being met by the deeper
penetration of fiber optics in the Access Networks.
Although CATV companies now provide over 100 Mbps
service with DOCIS 3.0 to compete with ILEC/CLEC, they are
now considering fiber deployment for providing services
such as triple-play services (voice, data and cable video;
please refer to the following application figure-2). Besides,
the HFC plant brings reliability/availability, powering and
potentially disruptive upgrades into question; on the
contrary, fiber has better reliability and PON has few plant
electronics, use less power and are easier to upgrade.
On the CO (Central Office) side, video signal received from
satellite to video head-end goes through amplifiers to
amplify the signal. A WDM combines the wavelength of
broadcasting video (1550 nm) and IP data (1490 nm) to
transmit through the fiber of outside plant to home users.
The WDM on the user side is to divide the wavelength to
two different wavelengths (1550 nm, 1490 nm) to different
transceivers. V-ONU demodulates 1550 nm signal for
broadcasting video programs. GEPON-ONU demodulates
1490 nm for IP data transmission.
Figure 2: ZyXEL GEPON End-to-End Applications in FTTB and FTTH
Benefits:
■
Flexible bandwidth offering from 39/39 Mbps to
1.25/1.25 Gbps per subscriber
■
The affordable solution to meet various FTTx
applications including FTTH, FTTC, FTTN, FTTB and
FTTP
■
Offer RF-over-Glass technology to provide high-
quality TV services
■
Lower CAPEX on GEPON total solution investment,
lower OPEX by employing ZyXEL’s proven centralized
GEPON network manager
Location ZyXEL Product List for the End-to-end 20 km GEPON Fiber Access
At CO Sites
OLT-1308S-22 (UL: 2 x 1000Base-T, 2 x 1000Base-SX/LX) *UL: Uplink
NetAtlas PON, EPON Manager
At Subscriber Sites
ONU-2024-21 (MDU, 24 x 10/100M LAN ports)
ONU-6100B-22 (bridge,1 x Gigabit Ethernet LAN port)
ONU-6040B-22 (bridge, 4 x 10/100M LAN ports)
ONU-6040BF-22 (bridge, 4 x 10/100M LAN ports, RF Overlay)
Location ZyXEL Product List for the End-to-end 10 km GEPON Fiber Access
At CO Sites
OLT-1308S-22 (UL: 2 x 1000Base-T, 2 x 1000Base-SX/LX) *UL: Uplink
NetAtlas PON, EPON Manager
At Subscriber Sites
ONU-6100B-21 (bridge,1 x Gigabit Ethernet LAN port)
ONU-6040B-21 (bridge, 4 x 10/100M LAN ports)
HD TV
OLT-1308S-22
GEPON OLT
ES-1528
18
20
22
17
19
21
10
12
14
16
9
11
13
15
2
4
6
8
1
3
5
7
24
23
25
ACT
100/1000
26
ACT
100/1000
ACT
LNK
27
ACT
LNK
28
LNK/ACT
FDX/COL
PWR
RESET
2
4
6
8
10
12
14
16
18
20
22
24
LNK/ACT
FDX/COL
1
3
5
7
9
11
13
15
17
19
21
23
Splitter
Splitter
FTTB
FTTH
GEPON ONU
ONU-6000 Series
IP STB
GEPON MDU
ONU-2024-21
IP Core
Network
End-to-end, Point-to-multipoint
GEPON Fiber Solution
12 13
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(318 Seiten)
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