Public switched telephone network access to public data network

Details Public switched telephone network access to public data network Public switched telephone network access to public data network

1992-10-14

1994-05-24

Ng, Jin F.

Telephonic communications

Telephone line or system combined with diverse electrical...

Having transmission of a digital message signal over a...

379 93, 379 98, 379220, H04M 1100

Patent

active

053156412

ABSTRACT:
A system and method for providing Feature Group B or Feature Group D access to the public data network for effecting point of sale transactions such as credit card authorization. The credit card authorization device includes a modem and auto-dialing mechanism which is connected by a station line to an originating central office switch. The originating central office switch is connected via Feature Group B or Feature Group D trunks to a designated destination central office including a stored program control (SPC) switch. The destination central office is a functioning central office connected to other central offices by non-Feature Group trunks. The Feature Group trunks are connected by the switch in the destination central office to a designated line which is connected to a line side modem which is connected via the public data network to a host computer for effecting the credit card authorization. The SPC switch at the destination central office converts the Feature Group number on the Feature Group trunk to a line side number for the station containing the line side modem. Common channel signaling and quick start or ground start are preferably utilized to optimize speed.

REFERENCES:
patent: 4219200 (1981-09-01), Smith
patent: 4796292 (1989-01-01), Thomas
patent: 5113430 (1992-05-01), Richardson et al.
patent: 5163086 (1992-11-01), Shearn et al.
patent: 5163087 (1992-11-01), Kaplan

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