Method for feeding call progress tones into conference connections

作者： Rolf Zeitraeg

DOI:

关键词: Subtraction 、 Word (computer architecture) 、 Code word 、 Call-progress tone 、 Computer science 、 Speech recognition

摘要: In addition to the overall sum code words, call progress tone words are formed which, in conference parts, respectively include a different PCM word corresponding tone. formation of respective partial be transmitted, by subtraction from individual components, an or selectively taken into consideration depending upon whether is fed not or, respectively, what concerned.

google.com 本地加速

lens.org UNKNOWN 下载加速

freepatentsonline.com UNKNOWN 下载加速

参考文章(5)

Gary D. Southard, Process and apparatus for producing conference connections in a PCM time multiplex switching system ,(1978)

Eduard Zwack, Method for forming a conference connection in a time division multiplex telecommunication switching system ,(1975)

Steven R. Cook, Method and apparatus for establishing conference calls in a time division multiplex pulse code modulation switching system ,(1977)

Lutz Karl Anton Dipl Ing, PCM TDM exchange conference connections - form sum of codeword and data words, stores total, determine priority and transmit message without codeword ,(1979)

Green John, Test circuit for investigating PCM signals - uses audio oscillator input to encoder:decoder with binary capture circuit ,(1977)