| 摘要 |
A method for providing support for both Authentication and Privacy and sending charge rates to pay phones/debit phones on an analog channel in a communication system using mobile station control messages in a non-standard manner is disclosed. Each control message contains an Order Code, a Qualifier Code, and a Local/Message Type. A first group of combinations of Order Code, Qualifier Code, and Local/Message Type are assigned to Authentication and Privacy. A second group of combinations of Order Code, Qualifier Code and Message Type are assigned to sending the charge rates, wherein the first and second groups are mutually exclusive.
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