1 — ONT overview
Alcatel-Lucent 7342 ISAM FTTU ONT R04.05.06 July 2008 1-3
3FE 51892 AAAA TCZZA Edition 01 ONT Product Information Manual
Figure 1-1 7342 ISAM FTTU network
P-OLTs and V-OLTs
The P-OLT and V-OLT reside in the central office (CO) or controlled environment
vault (CEV) and provide interfaces between the network and the gigabit passive
optical network (GPON).
ONTs
The Alcatel-Lucent ONT products are edge devices that use GPON technology to
extend a fiber optic cable from a P-OLT shelf at a CO to a subscriber residence,
including single-family residences, multi-dwelling residences such as an apartment
building, and small office home office applications.
ONTs End userNetwork Central office or
remote terminal
Passive
outside
plan
Fiber
distribution
1,490 nm
1,550 nm
1,310 nm
2.4 Gb/s
1.2 Gb/s
1968
1,550 nm
EMS/NMS
WDM
EDFA
Optional RF
overlay
PSTN
SoftswitchClass 5
switch
Voice
gateway
P-OLT
V-OLT
MDU
Edge switch
router
Ethernet
Internet
IPTV
1
1
1
Network can contain EDFA or V-OLT, not both
The maximum optical link length depends on the specific equipment and deployment conditions
2
2
Optical link length