SWITCHING SYSTEM HAVING CAPABILITY FOR TELE COMMUNICATION CONFERENCES

摘要

The switching system is operative under control of central control equipment (26) and includes a speech path memory (24) to sequentially store the multiplexed voice data signals. A circuit (28) demultiplies the switched voice data signals and transmits them to subscribers. A feedback system (22,28) sends the mixed voice signals back to the speech path memory to write the feedback voice data signals into it. Every accumulated voice signal is returned from the memory to respective subscribers via corresponding lines.