Call waiting signal arrangement
作者： Jr. Julius Jusinskas
DOI:
关键词: Engineering 、 Multiplexing 、 Line (text file) 、 Call control 、 Real-time computing 、 Symmetric digital subscriber line 、 Asymmetric digital subscriber line 、 Signal 、 Call waiting 、 Computer network 、 Relay
摘要: A telephone call waiting signal system as used in a processor controlled exchange, wherein reuse is made of an existing ringing supply bus and the relay each subscriber's line equipment for applying to line. This possible by multiplexing two signals selectively operating at equipment.
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