Protection switching in ring-configured networks
Protection switching of interface cards in communication system
Protection switching system for carrier transmission line
Protection system and method for resilient packet ring (rpr)...
Protection system for a distributed control automatic...
Protection system for intelligent cards
Protective casing for a hand-held portable radio telephone
Protective circuit for a subscriber line circuit and a...
Protective circuit for electroacoustic transducer
Protective coin return for a telephone paystation
Protective cover for an optical transceiver
Protective cover for telephones
Protective device and a television receiver provided with it
Protective relaying modem receiver
Protective sealable transparent flexible membrane for...
Protective shroud
Protective shroud for handheld device
Protective shroud for thermal imaging camera mounted to...
Protective surveillance system
Protocol adaptation