On Sun 10 Mar at 09:36 Poe Lim (3:623/630) wrote to Arthur Marsh:

 AM> Motorola ISG have been changing, with the Premier 
 AM> likely to be the last of the Thomson/Motorola based 
 AM> modems they produce. Future modems from Motorola ISG 
 AM> (Information Systems Group) will use modified AT&T 
 AM> chipsets. 

 PL> Did they say why? I know the USRs have been using AT&Ts, but 
 PL> being a major chip maker, I'd have thought Motorola would 
 PL> have used their own DSPs.

Maybe Motorola could make better margins using their fabrication plants for
PowerPC chips, and get a good price on modem chips from AT&T.

Further speculating, perhaps AT&T's chipsets for 33.6 kbps operation
were at a later stage of production than Motorola's.

It'll be interesting to see how long the Premier and 326X series lasts.
Some of the 326X series have synchronous operation and synchronous data
compression which low end modems lack and niche markets not easily migrated
over to other products.

For the best possible V.34 operation between a site with ISDN and a remote
site without ISDN, the ISDN equipped site should have a 4 wire interface to
its V.34 modem (either internally as Ascend presumably does, or by having a
4 wire interface on the ISDN terminal adapter).

Four wire analogue operation may also be easier to provide than ISDN for
remote sites that do need high speed data operation beyond 7 km from the
nearest exchange/RIM/RCM/...

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