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Technology Stocks : Qualcomm Incorporated (QCOM)

QCOM 163.32

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Nov 21 9:30 AM EST

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To: Bernard Levy who wrote (12100)	7/7/1998 5:45:00 PM
From: Joe NYC	Read Replies (1) of 152472

Bernard, However, this is not the case for wireless telephony, where voice activity is monitored to save bandwidth. This is also true of voice over IP. In fact, one of the big savings of voice-over-IP is its ability to use speech compression to significantly decrease the amount of transmitted data. Doesn't the the CDMA wireless line work on a similar principle as voice over IP? The voice gets compressed first, then sent to the base station and is reassembled there and converted to regular analog signal. I guess the differences are that in CDMA system you know that packet 1 will come before packet 2 etc, whereas in voice-over-ip, you don't know how the sequence how packets will arrive. One thing that's unclear to me is how the CDMA modems operate. Do they just generate standard modem "noise" which is sent as voice, or do they do anything special with it. If they use the standard modem sound as voice, then the modems would be bandwidth hogs. Joe

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