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DD298862A5
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Adapter
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DE3919632A1
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INSTALLATION COMPONENT KIT
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DE3907343A1
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Line-powered, automatic changeover circuit which connects a main or secondary connection line to the terminals, in particular telephone stations
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DE3709012A1
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CIRCUIT ARRANGEMENT FOR SIGNALING A CALL FOR A TERMINAL SWITCHED IN A DIGITAL TELEPHONE NETWORK
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DE3640707A1
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CIRCUIT ARRANGEMENT WITH A SELECT LOCK
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EP0201451A2
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Apparatus for the electrical transmission of information using wires
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DE3538486A1
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Method and circuit for calling the other telephone set in a telephone system
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DE3531168A1
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Method for picking up calls arriving on separate lines
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DE3531170A1
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Circuit for connecting two primary or secondary connection lines and the telephone sets assigned to them
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DE3502947A1
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Circuit arrangement with a dialling bar
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DE3347331A1
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Deactivation circuit for a subscriber device
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DE3345673A1
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Circuit arrangement to prevent accidental intrusion on a telephone set with a dialling restriction
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DE3343734A1
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Telecommunications device with at least two connection devices
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DE3304003A1
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Line termination
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DE3230395A1
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Switching device for connecting two or more telephone sets to a connection line
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DE3208072A1
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Housing for power connecting relays in telephone systems
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DE3148740A1
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TERMINATION FOR TELEPHONE LINES
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EP0058284A2
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Relay contact spring with a characteristic flat spring curve
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DE3142181A1
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Sequential changeover contact system
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DE3128427A1
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TELEPHONE SYSTEM
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