|
DE4437417A1
|
|
Method for monitoring digital signal connections
|
|
DE4425882A1
|
|
System for positional and time detection of identification information
|
|
DE4424236A1
|
|
Process for structuring a component surface, esp. a plate, made of a polymer
|
|
DE4423792A1
|
|
Multiple use of base channels in ISDN
|
|
DE4423790A1
|
|
Operating installation for additional powered function via telephone exchange line
|
|
DE4420212A1
|
|
Transmission system for simultaneous multiple sending of several picture and sound signals
|
|
DE4417286A1
|
|
ATM buffer circuit data read-out method
|
|
DE4416598A1
|
|
Securing telecommunication connection against unauthorised use
|
|
DE4415428A1
|
|
Telecommunication facility
|
|
DE4411954A1
|
|
Connector for coupling test and measuring devices to main distributor
|
|
DE4411583A1
|
|
Antenna for mobile handheld device with reduced radiation exposure to the user
|
|
DE4406601A1
|
|
Mutual authentication procedures
|
|
DE4404509A1
|
|
Additional call member arrangement for telephone subscriber's appts.
|
|
DE4402365A1
|
|
Line plug for distributor changeover connections
|
|
DE4344702A1
|
|
Alternative operation procedure for mobile subscriber's appts.
|
|
DE4343836A1
|
|
Radio telephone with base and mobile handset units
|
|
DE4341322A1
|
|
Alarm and emergency call transmission system
|
|
DE4341025A1
|
|
Telephone exchange
|
|
DE4339074A1
|
|
Remote operation procedure for handicapped user
|
|
DE4337653A1
|
|
Method and circuit arrangement for improving the quality of voice communication in hands-free telephone facilities
|
