Electronic components, circuits, software, systems or apparatus used in telephone systems

HELECTRICITY H04Electric communication H04MTELEPHONIC COMMUNICATION

H04M2201/00Electronic components, circuits, software, systems or apparatus used in telephone systems

H04M2201/02Diodes H04M2201/04Transistors H04M2201/06Integrated circuits H04M2201/08Magnetic elements H04M2201/10Logic circuits H04M2201/12Counting circuits H04M2201/14Delay circuits Timers H04M2201/16Sequence circuits H04M2201/18Comparators H04M2201/20Scanners H04M2201/22Synchronisation circuits H04M2201/26A/D convertors H04M2201/28S/P convertors H04M2201/30PCM H04M2201/32Personal computers H04M2201/34Microprocessors H04M2201/36Memories H04M2201/38Displays H04M2201/39using speech synthesis H04M2201/40using speech recognition H04M2201/405involving speaker-dependent recognition H04M2201/41using speaker recognition H04M2201/42Graphical user interfaces H04M2201/50Telephonic communication in combination with video communication H04M2201/52Telephonic communication in combination with fax communication H04M2201/54Object oriented software H04M2201/60Medium conversion H04M2201/80line protection circuits such as current or overvoltage protection circuits