Telecommunications – Radiotelephone system – Usage measurement
Patent
1995-09-22
1999-05-25
Kuntz, Curtis A.
Telecommunications
Radiotelephone system
Usage measurement
379 9101, 34082533, H04M 1500, H04M 1100
Patent
active
059078014
ABSTRACT:
Disclosed are methods for optimizing financial transaction processing when a conventional financial transaction processing terminal is used with a wireless transmission system. An adapter is used between the terminal and a wireless modem, such as a CDPD wireless modem. The adapter receives from the terminal a data block from which the adapter recovers the requested type of transaction and relevant information about the transaction, such as a credit card number, transaction amount, etc., and formats all transactions into a common format for transaction processing. The common format includes a check code which may be used to detect changes made to the original data block as received from the terminal. The adapter then compresses the common format for wireless transmission. The goal of the use of the common format and the data compression is to fit the transaction request into a single data packet. A host computer receives the data packet, recovers the compressed common format and de-compresses the compressed common format to recover the common format. The common format may then be converted back to the original data block, as it was received from the terminal. The check code may be used to detect errors in compression, transmission and de-compression of the data block. The host computer processes the requested financial transaction and transmits a reply to the terminal, via the wireless modem and the adapter.
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Albert Herb H.
Renton Paul A.
Schramke Stephen R.
AT&T Wireless Services Inc.
Kuntz Curtis A.
Legree Tracy M.
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