Telephonic communications – Special services – Reserved call
Patent
1992-07-29
1994-05-03
Dwyer, James L.
Telephonic communications
Special services
Reserved call
379 67, 379 88, 379142, 379211, 379215, 379212, H04M 342, H04M 164, H04M 156
Patent
active
053095120
ABSTRACT:
A call waiting deluxe method where a switching system forwards calls to a service node that provides specialized call processing, e.g., processing requiring text-to-speech, to a number of switching systems without requiring modification of the hardware design of those systems. Only calls to busy called stations are forwarded to the service node using a call forwarding-busy line feature to avoid unnecessary delays and excessive service node traffic for normal calls. The service node uses the same directory number that was initially dialed for the call, in invoking a call waiting-originating feature which takes precedence over the call forwarding-busy line feature and results in the transmission of a call waiting signal to the called station. The service node obtains the calling party name from a database and responds to a flash signal from the called station by speaking the calling party name to the called party. The service node also transmits an announcement to the called station including a number of call handling options, and responds to a signal from the called station defining one of the options by controlling handling of the incoming call in accordance with the defined option.
REFERENCES:
patent: 4661975 (1987-04-01), Brecher
patent: 4785408 (1988-11-01), Britton et al.
patent: 5007076 (1991-04-01), Blakley
A-I-Net.TM.Service Circuit Node (SCN) System Description, 270-730-010, Issue 1, Apr. 1992.
A-I-Net.TM. Service Circuit Node (SCN) Product Technical Specifications Release 1, 270-730-011, Issue 1, Apr. 1992.
5ESS.TM. Switch Feature Handbook, p. 19.
Blackmon La Sheral
Blakley James R.
Kohn Cheryl J.
Sermersheim Brenda L.
Whildin Kathleen C.
AT&T Bell Laboratories
Dwyer James L.
Hong Harry S.
Watland Ross T.
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