Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Including fault responsive disconnection of tested component
Patent
1986-03-20
1987-11-10
Schreyer, Stafford D.
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
Including fault responsive disconnection of tested component
379 32, 379 71, 379 84, 379201, H04M 326
Patent
active
047062703
ABSTRACT:
The equipment consists of one or more voice units (U1 . . . Un) each connected to a certain number of independent lines (E1 . . . En) connected to a telephone network (RT). Each unit presents an announcement data base (AA1 . . . AAn) which contains all possible announcements to be supplied to the subscribers, a computer (EL1 . . . ELn) which manages the research of an announcement in the data base (AA1 . . . AAn) and its sending to the subscribers (UT1 . . . UTx) and an interface (IEC1 . . . IECn) towards the network (RT) for the temporary storage of the announcements or part of them before the sending, the processing of the telephone signalling, the possible conversion into analog form, and the equipment supervision.
REFERENCES:
patent: 4255618 (1981-03-01), Danner et al.
patent: 4356351 (1982-10-01), Shefler et al.
patent: 4545043 (1985-10-01), Anderson et al.
R. J. Frank et al., "Mass Announcement Capability" and T. W. Anderson et al., Mass Announcement Subsystem, both in Bell System Technical Journal, vol. 60, No. 6 (Jul.-Aug. 1981).
D. S. Cheeseman et al., "Prospects for Voice Signalling in the Telephone Network", 1982 International Zurich Seminar on Digital Communications, Mar. 9-11, 1982.
Don Jones, "Delta Modulation for Voice Transmission", Harris Semiconductor Products Division, 1979.
Astegiano Luciano
Bertoglio Ottavio
Bosco Fulvio
De Bosio Alfredo
Franco Dario
Dubno Herbert
Ross Karl F.
Schreyer Stafford D.
Societa' Italiana per l'Esercizio Telefonico p.a.
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