| 摘要 |
A multi-media interface (12) is disclosed for interfacing multi-media voice and data between a host messaging center (14) and various communication networks (8) including, for example, the public switched telephone network (PSTN), the packet switched public data network (PSPDN), and the cellular telephone and paging networks at a very high data throughput. The multi-media interface (12) provides protocol conversions for different telecommunication protocols corresponding to various types of telecommunications media, for example, speech in analog form, speech data in pulsed code modulated (PCM) form, modem data in PCM form, data in analog form modulating sinusoidal carriers, and data in various digital forms associated with a variety of protocol standards.
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