Speech as LAN Data

February 1997 / Reviews / Your PC's Ringing -- Answer It! / Speech as LAN Data

The key concept behind EtherPhone is LAN telephony integration (LTI). Unlike computer telephony integration (CTI), LTI interleave s voice packets with file-sharing packets through the LAN wire.
The biggest drawback to sending voice signals as data packets on an Ethernet LAN is the potential for time lags on a busy network, something a more expensive asynchronous transfer mode (ATM) LAN would not encounter. Phonet engineers circumvent the problem by using faster, digital signal processor-based (DSP) hardware -- with an Analog Devices ADSP-2105 -- and algorithms designed specifically for voice-as-LAN-data.

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Matthew Wilson
My approach to software engineering is far more pragmatic than it is theoretical--and no language better exemplifies this than C++.

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