Installation de télécommunication permettant d'aiguiller les communications émises d'un point d'un réseau de télécommunication vers un autre point.

摘要

646,374. Automatic exchange systems. COMPAGNIE GENERALE D'ELECTRICITE. Oct. 14, 1946, No. 30535. Convention date, May 2. [Class 40 (iv)] In an alternative rout ing system, traffic relays 1, 2 and 3, Fig. 2, operate at an exchange A when the traffic intensity in the arm AB of a net. work (Fig. 1) reaches 80, 90 and 100 per cent respectively. Relays 4, 5, 6 corresponding to arm AC, and the traffic is directed over the route carrying the least traffic. Marking wires B1, D1 correspond to stations B, D and marking wires A1B1, A1C1 correspond to junctions AB, AC. Relay 7 is controlled by the traffic relays 1 to 6 to direct calls for exchange D over junction AB or AC in accordance with the relative intensity of traffic on the two junctions. Relay 8 diverts calls for exchange B over junction AC when the traffic intensity on AB reaches 100 per cent and relay 3 operates. If the traffic on junction CD is heavy, a traffic regulating device at exchange C signals exchange A over conductor T to operate relays 9, 10. Relay 9 falls back at the end of the signal but 10 is held and relay 7 is disabled so that no further calls can be directed over junction AC. Relay 10 is released to free relay 7 when a further signal is sent by exchange C over T2 when the traffic on CD diminishes. Relay 14 operates to release 10 and the sender at C is released by a battery signal applied to conductor A. Exchange C. Similar traffic regulating equipment is installed at C. Heavy traffic on CD operates relay 6, relay 12 follows and a sender S is seized by ground on wire M. The sender S signals exchange A to operate relay 9 at A over conductor T. The sender also operates relay 13 and releases itself, but is seized again if the traffic falls and releases 6, 12. When the sender is seized a second time with 13 already operated, it signals exchange over conductor T2, operates relay 14 and is released by an acknowledgement signal from exchange A. Specification 23305/46, (as open to inspection under Sect. 91), is referred to.