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[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-----