CONNECTING SOCKET FOR TELEPHONE APPARATUS AND / OR TELEPHONE ACCESSORIES
IL85561D0
Tamper proof housing for electrotechnical installations
DE3713935A1
Circuit for ancillary telephone devices powered by the connection line
DE3712693A1
Contact plug for the connection of coaxial cables
DE3706604A1
Plug for electrical ribbon cable (flat cable)
DE3703447A1
Selective switching mechanism for one for several telephones - has logic circuit responding to engaged-reset state of sets to open-close MOSFET gating circuitry
DE3643707A1
Call-barring device for a telephone terminal which can be connected to the telephone network and which uses a multi-frequency dialling method
DE3627802A1
Monitoring circuit for lines in alarm systems
DE3627045A1
Alarm system
DE3627020A1
Alarm system
DE3624081A1
Overvoltage protection terminal block
DE3621412A1
Call barring device for a telephone terminal connected to the telephone network and operating according to a multi-frequency dialling procedure
ATA134886A
Connecting socket for the connection of a telephone set and/or of one or more telephone accessories
DE3609979A1
Device for monitoring telephone terminals for faults, in particular short circuit
ATA5986A
Connecting socket for the connection of a telephone and/or of one or more telephone accessories
DE3513846A1
Circuit for monitoring the insulation resistances of a group of modules of an electrical installation with a common earth-free power supply, in particular a telecommunications or signalling device
DE3513849A1
Method for monitoring the insulation resistances of a group of modules of an electrical installation with a common earth-free power supply, in particular a telecommunications or signalling device
DE3513850A1
Method for monitoring the insulation resistances of a group of modules of an electrical installation with a common earth-free power supply, in particular a telecommunications or signalling device
DE3513848A1
Circuit for monitoring the insulation resistances of a group of modules of an electrical installation with a common earth-free power supply, in particular a telecommunications or signalling device
DE3513847A1
Method for monitoring the insulation resistances of a group of modules of an electrical installation with a common earth-free power supply, in particular a telecommunications or signalling device