For those interested in design of these purple boxes, etc., you might want to check out a couple of magazines that are FULL of advertisements and specs on DSP's, CPU's, communications design equipment, etc: Data Communications (800) 525-5003 and Computer Design Circulation Director (918) 832-9287 email paulw@pennwell.com Both magazines are free. Alan Patterson (lep@wsnet.com) PGP public key available at MIT keyserver. WSNetwork Communications Services, Inc. Fngpt: 41D0F61B496FECC09FABECF686AB2AIC Montgomery, Alabama (334) 263-5505 (800) INET-750 PGP Encrypted Email Preferred