Point-To-Multipoint Applications - Comtech EF Data DMD1050TS Installation And Operation Manual

F.4

Point-to-Multipoint Applications

In many instances, customers need to connect multiple remote sites to a central hub. Because of
the EEI's multi-port interface and daisy chain capability, the hub router does not need to know
that there are multiple return paths. As the network grows, you will not need to change the
network configuration or buy additional router blades for the hub. Simply add the new hub
demodulator to the end of the existing daisy chain. You can bring a new remote online without
disrupting the existing traffic.
Figure F-3 shows how the DMD50, DMD20 and MD2401 multi demodulator can be used in the
same network. They provide a large outbound carrier and various return carriers, typical of an
internet café application.
Hub
Router
LAN
Figure F-3. Point to Multipoint – Large Outbound, Smaller Returns
Appendix F
DMD50
Daisy Chain
DMD20
Daisy Chain
MD2401
Rx 512 Kbps
DMD1050TS Satellite Modem Board
DMD50
DMD50
DMD50
DMD50
DMD50
DMD50
F–3
Revision 1
Remote
Router
LAN
Remote
Router
LAN
Remote
Router
LAN
Remote
Router
LAN
Remote
Router
LAN
Remote
Router
LAN
MN-DMD1050TS