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Publication of BE476384ApublicationCriticalpatent/BE476384A/xx
H04M9/00—Arrangements for interconnection not involving centralised switching
H04M9/001—Two-way communication systems between a limited number of parties
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04B—TRANSMISSION
H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
H04B1/02—Transmitters
H04B1/04—Circuits
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Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
Computer Networks & Wireless Communication
(AREA)
Transmitters
(AREA)
Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment
(AREA)