Blocking device for outgoing connections or calls in a telephone system
DE4313711A1
Handset with a listening area and a monolingual area
DE4244291A1
Telephone appts.
DE4233108A1
Safety coupling device, esp. for explosive environments - contains device with intrinsically safe components connected via cable and plug connector to device with encapsulated components
DE4231668A1
Wall mount for a desk phone
DE4223710A1
Telephone wall mounting - holds telephone securely with hook on wall mounted plate engaging with telephone
DE4218571A1
Telephone handset
DE4142742A1
System for forwarding a call arriving on a first connecting line via a second connecting line to another telephone connection
DE4117598A1
Telephone set
DE4107371A1
Flat-design telephone handset
DE3826002A1
Circuit arrangement for feeding an amplifier from the public telephone network
