Radyne OM20 Specifications Page 166

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DMD1050 Satellite Modem Board Ethernet Data Interface
F.4 Point-to-Multipoint Applications
In many instances, customers need to connect multiple remote sites to a central hub, and here
again, the EEI provides exceptional value and ease of use. With its multi-port interface and daisy
chain capability, your hub router doesn’t need to know that there are multiple return paths. And
as your network grows, you won’t need to change your network configuration or buy additional
router blades for your hub. Simply add the new hub demod to the end of your existing daisy
chain and you can bring a new remote online without any disruption to the existing traffic.
Figure F-3 illustrates how the DMD50, DMD20, and MD2401 multi demod can be utilized in the
same network to provide a large outbound carrier and various return carriers, typical of an
internet café application.
DMD50
DMD20
MD2401
Tx 52 Mbps
Rx 30 Mbps
Rx 10 Mbps
Rx 2 Mbps
Rx 1 Mbps
Rx 128 Kbps
DMD50
DMD50
DMD50
Tx 30 Mbps
Rx 52 Mbps
Tx 10 Mbps
Rx 52 Mbps
Tx 2 Mbps
Rx 52 Mbps
DMD50
Tx 1 Mbps
Rx 52 Mbps
DMD50
Tx 512 Kbps
Rx 52 Mbps
DMD50
Tx 128 Kbps
Rx 52 Mbps
Router
Router
Router
Router
Router
Router
Router
Hub
LAN
Remote
LAN
Daisy Chain
Daisy Chain
Remote
LAN
Remote
LAN
Rx 512 Kbps
Remote
LAN
Remote
LAN
Remote
LAN
Figure F-3 – Point to Multipoint – Large Outbound, Smaller Returns
MN-DMD1050 F–4
Revision 9
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