2nd International Symposium on Subscriber Loops and Services, 3-7 May 1976

2nd International Symposium on Subscriber Loops and Services, 3-7 May 1976

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Signals representing the four call status conditions are transmitted from the central equipment to line as a 3-bit code by ... These signals are detected at the central equipment by the amplifier AMP l. ... is generated at the exchange line unit and this INTERCOM MANDSET - BUTTONS aamp; t-GROUP SELECT NAMEPLATE a€“Z \.


Title:2nd International Symposium on Subscriber Loops and Services, 3-7 May 1976
Author:
Publisher: - 1976-01-01
ISBN-13:

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