Secure cryptographic method and apparatus therefor
DE102008024784A1
IAD (Integrated Access Device) with DSL interface and ISDN functionality
DE102007014449A1
Switching voltage converter for use as step-up converter, has integrated voltage controller used as voltage reference, and standard-logic-integrated circuit or part of application specific integrated circuit used as control circuit
DE102006031930A1
Configuration circuit for ISDN interfaces
DE102006028183A1
Electronic switching of ISDN interfaces
US2005219099A1
Analog-to-digital converter (ADC)
DE102004039759A1
Up interface circuit
DE102004018976A1
Improved gate array or FPGA
DE102004007588A1
Frequency generator with digitally adjustable frequency
DE102004005089A1
Combined interface for an ISDN SO and Up interface
DE10341236A1
Analog / digital converter
DE10211642A1
Interface circuit for the implementation of a standardized ISDN basic connection
DE10211229A1
Pulsed voltage transformer
DE10209383A1
Communications router has identifier stored within it so that when calling the router the caller ID is evaluated and authorized as an identifier by time-related activation at the router.
DE10209164A1
H-bridge circuit
DE10148799A1
Delta-Sigma analog / digital converter
EP1410650A1
Telephone system and device for operating said system
