Design of a Satellite Modem changeover Redundancy Switch

A Satellite modem manufacturing company approached Funambolo to design a redundancy switch which will provide changeover for any of the faulty 10 prime modems to a standby modem to seamless switch over.

Funambolo designed the complete Redundancy Switch that can be configured to learn the parameters of each Prime modem. If any Prime modem fails, the Standby modem is configured with the same parameters as the Prime modem. The data to / from the prime modem is switched to the standby modem, and the IF output of the Prime is turned OFF and Standby modems is turned On.

The features are

• Redundancy Switch supports up to 10 prime modems and 1 Standby or Backup modem.
• Redundancy Switch provides changeover for Serial and Ethernet Data Interfaces and the IF.
• The Serial and Ethernet Data Input / Output signals of the modems are physically switched from the prime to theStandby.
• Redundant power supply.
• On the IF side, the modems’ internal mute is used to turn-o the IF output of modem which is going Off-line and the Standby modem is unmuted when it is taking over for a Prime modem.
• The redundancy switches are modular in construction. The Data interfaces plug into the backplane, allowing each modem Interface to be plugged in or out without affecting the other modem traffic.