PBX telephone call control system

Details PBX telephone call control system PBX telephone call control system

1993-11-10

1994-06-28

Brown, Thomas W.

Telephonic communications

Audio message storage, retrieval, or synthesis

379212, 379214, H04M 350, H04M 358

Patent

active

053254228

ABSTRACT:
A PBX telephone call control system is disclosed. The system provides a line interface unit connection between a plurality of subscriber line extensions and a private branch exchange (PBX) switching equipment. The call control system appears to the PBX like any other telephone extension within the office environment and provides the user with more features in conjunction with the pre-existing PBX equipment, providing expanded capabilities at a reasonable expense.

REFERENCES:
patent: 3111561 (1963-11-01), Dunning
patent: 3179750 (1965-04-01), Reilly
patent: 3347988 (1967-10-01), Marill et al.
patent: 3482057 (1969-12-01), Abbott et al.
patent: 3510598 (1970-05-01), Ballin et al.
patent: 3614328 (1971-10-01), McNaughton et al.
patent: 3793487 (1974-02-01), Kilby
patent: 3859473 (1975-01-01), Brown et al.
patent: 3867582 (1975-02-01), Weed et al.
patent: 3963875 (1976-06-01), Gueldenpfennig
patent: 3985971 (1976-10-01), Colpoys
patent: 3989901 (1976-11-01), Neuwirth et al.
patent: 3992587 (1976-11-01), Puckett et al.
patent: 4086438 (1978-04-01), Kahn et al.
patent: 4088838 (1978-05-01), Nakata et al.
patent: 4122308 (1978-10-01), Weinberger et al.
patent: 4139739 (1979-02-01), von Meister et al.
patent: 4152547 (1979-05-01), Theis
patent: 4191855 (1980-03-01), Sakai
patent: 4200772 (1980-04-01), Vicari et al.
patent: 4232199 (1980-11-01), Boatwright et al.
patent: 4255618 (1981-03-01), Danner et al.
patent: 4327251 (1982-04-01), Fomenko et al.
patent: 4356351 (1982-10-01), Shefler et al.
patent: 4371752 (1983-02-01), Matthews et al.
patent: 4376875 (1983-03-01), Beirne
patent: 4413158 (1983-11-01), Danford
patent: 4420656 (1983-12-01), Freeman
patent: 4439635 (1984-03-01), Theis et al.
patent: 4446553 (1984-05-01), Webber
patent: 4484031 (1984-11-01), Gray et al.
patent: 4488005 (1984-12-01), Frantz
patent: 4577062 (1986-03-01), Hilleary et al.
patent: 4600814 (1986-07-01), Cunniff et al.
patent: 4608640 (1986-08-01), Carter et al.
patent: 4696028 (1987-09-01), Morganstein et al.
patent: 4975941 (1990-12-01), Morganstein et al.
"ROLMphone User Guide," pp. 2-4, 17, 24, 83, and 86 (Rolm, Jul. 1985).
L. Goeller, Jr. & J. Goldstone, "The ABCs of the PBX," Datamation, pp. 9-13 (Apr. 1983).
T. Kopec & P. Lind, "Electronic Business Telephone," GTE Automatic Electric Journal pp. 34-40 (Mar. 1980).
K. Tapper & P. Thatte, "GTD-1000 Digital PABX CAS Main/ACD," GTE Automatic Electric Journal, pp. 182-193 (Nov. 1980).
Data Communications, pp. 158 and 160 (Jul. 1983).
R. Kaloian, "What if you cut over a new telecom system . . . and nobody used it?" Communication Age, pp. 46-47 and 50 (Sep. 1986).
R. Zarlenga, "Business Telephones With Enhanced Features: The Old Phone Gets Smart," Telephony v. 199 n. 2 pp. 78-79 (Jul. 14, 1980) (abstract).
Telephone Engineer and Management, p. 67 (Mar. 15, 1979).
Telesis (AT&T), p. 32 (1982 one).
M. Weik, "Communications Standard Dictionary," pp. 238 and 364 (Van Nostrand Reinhold Co. 1983).
The Teleconnect Dictionary, p. 177. (undated).
G. Langley, Telephony's Dictionary, p. 128 (2d.ed.), 1986.
T. Smith, "Abc of the Telephone," p. 20, BNR Inc. (undated).
IEEE Standard Dictionary of Electrical and Electronics Terms, pp. 245 and 357 (3rd. ed. 1984).
"Unanswered Call Diverter," IBM Technical Disclosure Bulletin, vol. 25, No. 7A, Dec. 1982, pp. 3480-3481.
"Applications of MT8860 Family of DTMF Receivers," Mitel Application Note (Aug. 1980).
"LPC-10 Speech Synthesizer With On-Chip 20k Speech Data ROM," S3610, AMI (Aug. 1982).
"S2559 DTMF Tone Generator," AN-101, AMI (Aug. 1982).
"A Unique Monolithic AGC/Squelch Amplifier," AN-51, NS (Sep. 1971).
"LF11508/LF13508 8-Channel Analog Multiplexer et al.," National Semiconductor (marked Jan. 1982).
"Telephone Coupling Transformers," Litton Triad-Utrad Distributor Services, Form TCT-74 (undated).
"Sine Wave Oscillator," AN20-9 (undated).
"AC/DC to Logic Interface Optocoupler," HCPL-3700, Hewlett Packard (Feb. 1982).
"Tone Decoder/Phase Locked Loop," Signetics (marked 1976).
"TP3040/TP3040A PCM Monolithic Filter," National Semiconductor (marked 1982).
J. Peatman, "I/O Control" (Chap. 5-1), I/O Timing (Chap. 5-2), Real-Time Programming (Chap. 7-2), Microcomputer-Based Design (McGraw Hill, 1977).
"Centrex-A Management Overview," Datapro Research Corp. (Nov. 1983).
M. Hills & S. Kano, "Programming Electronic Switching Systems-Real-Time Aspects and Their Language Implications," Section 2.4.2, Scheduling Functions Divided Systems, pp. 37-39, IEEE Telecommunications Series (Peter Peregrinus Ltd. 1976).
E. Smith, "Glossary of Communications," p. 64 (Telephony Publishing Corp. 1971).
"Rohm Centralized Attendant Service," Rolm Corp (1979).
"AIS Automatic Intercept Service Versatile Efficient Information Service," Fujitsu Limited (date stamped 1972).
"Data Set 407 Interface Specification," AT & T (Jun. 1975).
"Direct Inward Dialer", Telephonic Equipment Corp., p. D022956 (1981).
"Direct Inward System Access":, Telephonic Equipment Corp., pp. D022965-22966(1981).

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