| 摘要 |
PCT No. PCT/SE85/00353 Sec. 371 Date Apr. 16, 1986 Sec. 102(e) Date Apr. 16, 1986 PCT Filed Sep. 17, 1985 PCT Pub. No. WO86/01960 PCT Pub. Date Mar. 27, 1986.A method and apparatus relating to telecommunication systems of the early care telephone type, in which a plurality of subscribers (TA) may be connected to one or more supervision centers (A-C) via a telephone exchange (EX). If any of the centers are night service-connected or out of operation for some reason, a call from a subscriber will be automatically re-routed to another center. When a subscriber equipment unit (SE) associated with a subscriber (TA) has called the telephone number of a duty center (A), the call is answered automatically by an automatic telephone answerer (ATS) or by other equipment which can execute a call diverter function. Instead of a spoken message, there is recorded on the automatic telephone answerer a signal which enables receiving a new telephone number in the subscriber unit (SE), which number is recorded on the telephone answerer. The telephone number message can be accompanied by a single which causes the subscriber unit to disconnect the established telephone connection, or this can be achieved by a caller's time monitoring facility's disconnecting when criterion acknowledgement signal has not been received. After a suitable time lag, the calling sequence is started once again, but to the supervision center (C) intended by the received telephone number. |
