NEC P521 Specifications page 2

What is IPTV?
Internet Protocol television (IPTV) is the delivery of programming by video stream encoded as a series of internet protocol packets (data
packets). IPTV primarily uses multicasting with Internet Group Management Protocol (IGMP) and Real Time Transport Protocol (RTP).
Compatible video compression standards include H.264, Windows Media Video 9, VC1 and MPEG-2. With the ability of category 5 cabling
infrastructures and Internet protocol, video signals can be broadcast over greater distances. Moving video across your network using data
packets enables you to control the quality of service, points of viewing as well as enhancing the user experience. The options are endless.
What is the difference between unicast and multicast?
Along with standard NTSC/ATSC/Clear QAM signals over coax, the NEC MPD-DTi allows the communication of your signal from the
source via unicast or multicast communications across UTP category cable. Unicast can be seen as a one-to-one relationship. A new
signal of the data is required for each end-user on a network even though the content remains exactly the same. This is often termed as a
point-to-point relationship and translates into an increase in bandwidth needed to run the same signal to multiple locations. In contrast,
multicast is the communication between a single sender and multiple receivers on a network requiring one stream of content for all end
users. In this scenario, multicast remains bandwidth-efficient because it requires only one stream of data for these multiple locations.
Unicast Example
Signal
source
Clients
How do I set up an IPTV network?
Similar to most IP-enabled devices on your network, you can set up your IPTV with all the necessary Internet protocol information. IPTV
runs over an IP network, which means it will work over your existing home or office Ethernet network. In simple environments, you need
a device housing and distributing your content along with a router or a switch to reach multiple locations. The diagram below shows a
simple setup scenario. For more complex networks, see your system administrator for details.
NEC Displays Supported
NEC S Series
40" S401
46" S461
52" S521
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of their respective holders. Product specifications subject to change.
10/10 ver. 2.
©2010 NEC Display Solutions of America, Inc. All rights reserved.
Multicast Example
Signal
source
Unicast
user 1
user 2
user 3
Source router
user 4
all users receiving the
same channel
NEC P Series
40" P401
46" P461
52" P521
55" P551
70" P701
NEC Display Solutions
500 Park Boulevard, Suite 1100
Itasca, IL 60143
866-NEC-MORE
Clients
Multicast
user 1
user 2
user 3
Source router
user 4
all users receiving the
same channel
NEC X Series
46" X462UN
46" X461HB
43" X431BT