[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
re: voice encryption/isdn
>> [IBM ISDN board with TI DSP, COM1 interface, 64kbps]
>The big problem with ISDN is still getting connectivity to the
>people you want to talk to and getting service at reasonable prices
Yep. But it may be there some day. Ken Olson called ISDN a joke.
I remember seeing somebody in Computer World saying ISDN stood for
"I Still Don't kNow".
>Do you know if the TI DSP is user-programmable, or if it's just
>performing most of the ISDN functions?
Hah! We are talking about an IBM board here!! :-) There was some
kind of ROM on the board, it may be an 8051 with EPROM? Or possibly
a 68701. We will figure it out at some point.
Speaking of DSP the new AT&T 3700 modem (from paradyne actually) has
a DSP and it seems to be driven by an easily modifyable rom. Just another
possibility.
While we are blue skying about this - what about the idea of using two
cellular connections in parallel? Aside from cost it might create some
interesting interception problems.
---------
I'd like a 250 Mhz 128 bit hybrid processor with 64 meg of 8 way interleaved
memory, a 10 megabyte per second i/o channel, two 3 gig hard disks, two dat
drives with compression, and a large diet coke.
-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: 2.3a
mQCNAiz4FWMAAAEEALBCb7HZS7V4gbsp9yJ7Yty49jQ9wcgRhkLjNNgdyJbrJZCq
5/sv4Ljy/4AhVhjlJyZS8L3owS8l0ClZVzWw4/kO3KN7MPz4YPPR7+qIlPQVM0yv
gWpJ43EZZ8b8cvAkE9HATCKWktY2ReRSX5DLnScDH/n5jivw+MD/UO8fURCVAAUR
tCBNYXJrIEhpdHRpbmdlciA8YnVnc0BuZXRzeXMuY29tPg==
=VbKi
-----END PGP PUBLIC KEY BLOCK-----