On Mon, 18 Sep 2000 [EMAIL PROTECTED] wrote:
>> yet connect to normal analog lines. No reasons why the security
>> couldn't be end-to-end.
>
>Lots of reasons. The base unit of those phones has a D-A
>converter, and talks to the analog network. The digital part is only
>for the over-the-air connection.
With Phase 2+ GSM and UMTS we will have tandem free operation - here it
should theoretically be possible to do e2e security. The same goes for
GPRS/HSCSD - no essential reason why we couldn't build the voice service on
top of a data one, if retransmits can be suppressed and we use a newer
codec to fit the bits in the pipe.
Sampo Syreeni <[EMAIL PROTECTED]>, aka decoy, student/math/Helsinki university
