| 摘要 |
A process for controlling a telephone switching system provides a telephone customer access from any dual-tone multi-frequency (DTMF) telephone set to a memory-stored list of calls which the customer had previously been unable to answer at the customer's registered telephone station. A party receiving no answer when placing a call to the customer's station, whether due to a busy line or absence of the customer, is advised by a recorded message to enter, via the DTMF keyboard, the caller's phone number. The number received in the response is then entered on the customer's callback list, which may later be accessed by the customer from the customer's station, or from any DTMF set. Upon entering proper identification, the customer is advised of the number, and other identity, of any of the calling parties on the callback list. The customer may signal for the automatic placement of a return call to, or may delete or hold, any of such listed numbers. The sytem also provides customer access from the remote set to other customer-subscribed telephone services.
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