| 摘要 |
A telephone system comprises: a telephone exchange with a central unit which is adapted for processing at least speech signals and call signals; a number of cordless handsets; at least one transmitter/receiver for communication between the exchange and the handsets; and a speech buffer present in each handset. The central unit is adapted for generating a call signal, the content of which depends on the nature of the connection to be made, which call signal is added to the speech signal; a handset is adapted for storing in the speech buffer and reading therefrom the content of that signal; and acoustic and/or optical warning are energized subject to that content.
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