From: Phil Karn <karn@qualcomm.com> (Phil Karn)
Date: Mon, 8 Feb 93 09:48:44 PST
To: thug@phantom.com (Murdering Thug)
Subject: Re: Modem Based Crypto Telephones
Message-ID: <9302081747.AA00377@servo>
MIME-Version: 1.0
Content-Type: text/plain


It's true, dialup modems are becoming so fast that low bit rate vocoders
may well prove unnecessary for a secure phone with good voice quality. But
vocoders are still handy for allowing the use of a slower modem (e.g., over
impaired lines, such as those with a lot of taps :-)) and for freeing up
bandwidth that you might want to use for other purposes (e.g., data).

Phil