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David A. Burgess dburgess at jcis.netYes, and in most networks that CSD connection is a kind of beacon, screaming to the network operator, "Hey! Look at me! I'm using a cryptophone! Pay extra special attention to my movements and calling patterns!" On Apr 10, 2012, at 12:04 AM, Jama Solomo wrote: > >> Yes, the idea has been raised many times before. >> >> The problem is that in a lot of network the voice is going to be >> decompressed in the network, transferred as PCM and then recompressed. >> >> > The crypt phones, which are used from our politicians today, > establishing a CSD connection for voice crypt transmission. > >