Telephonic communications – Special services – Abbreviated dialing or direct call
Patent
1990-12-19
1993-01-26
Dwyer, James L.
Telephonic communications
Special services
Abbreviated dialing or direct call
379201, 379212, 379355, H04M 342, H04M 100
Patent
active
051827662
ABSTRACT:
This invention relates to a method and apparatus for signaling telecommunications customer requests to a switching system. The basic signaling arrangement consists of a series of function calls, including a function type specifier and an optional parameter of the function. Function calls are separated by delimiters which are strings of characters, such as ** or *#, that are unique and not to be confused with function type specifiers or parameters. Strings of function calls can be stored in a switching system and can be called by a speed calling request. The function types include types wherein a customer supplies a parameter, such as a personal identification code in an otherwise prespecified string of function calls.
REFERENCES:
patent: 4513175 (1985-04-01), Smith
patent: 4571463 (1986-02-01), Shefler
patent: 4613730 (1986-09-01), Fechalos et al.
patent: 4769835 (1988-09-01), Hirth et al.
Bell Communications Research Technical Reference TR-TSY-000505, Issue 2, Call Processing, LATA Switching Systems Generic Requirements, Section 5, Jul. 1987, pp. 5.3-5-5.3-17.
AT&T Bell Laboratories
Dwyer James L.
Hong Harry S.
Ulrich Werner
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