CHAPTER 3: FIELD APPLICATIONS
MDU Solutions
®
– DVIS/DVISm - Digital Video Insertion System & Mini Digital Video Insertion System - Installation & Operation Manual
3-5
3.4.2 IP Insertion - Optical Transport
This application uses encoding capability with IP output to insert programming into an IPTV network for distribution at a hub,
Figure 3-7. The DVIS platform with GbE output card may be used to insert IP video content directly to a network switch for
transmission on the plant in a hotel or other hospitality environment or transported via Edge QAM and optical for remote
delivery.
3.4.3 Local Content Back Haul Over IP
DVIS systems may be used for IP back haul where there is a source of video at a point in the plant such as a remote studio
or special program origination location and the video is needed at a hub for reinsertion into the plant. There are two main
applications as illustrated in
1. Fiber Back Haul
This provides guaranteed signal quality, link speed and bandwidth. In this case, a single mode SFP installed in the
GigE Module may be used to transport the IP stream on the fiber.
2. DOCSIS Modem Back Haul
Not always possible to guarantee link speed and bandwidth which could vary, therefore encoded signal quality must
be lower due to lower upstream bandwidth. In this case a DOCSIS modem with high rate upload speed is used to
transmit the video over IP to the hub, where it is re-inserted.
Figure 3-7:
IP Video Insertion to Optical Transport
IP Video Backhaul
STUDIO
OUTSIDE PLANT
HEADEND/HUB
IP VIDEO BACKHAUL
DVIS / DVISm
ENCODE / MUX / IP TRANSMISSION
TS
MULTIPLEXER
IP OUT
RJ45 10/100/1000
BaseT, SFP GigE
CHANNEL MPEG VIDEO ENCODERS
A/V
SOURCE
A/V
SOURCE
A/V
SOURCE
DOCSIS
MODEM
COPPER
SFP GigE
OPTICAL NODE
OPTICAL
RECEIVER
CMTS
SWITCH
EQAM
EQAM
OPTICAL
TRANSMITTER
Figure 3-8:
Local Content Back Haul over IP
