Encrypted GSM phone

[David A. Burgess]

Yes, 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.
> 
>