We at BARRNet are considering re-evaluating the T1 CSU/DSUs that we use in an effort to find a more cost-effective solution to connecting small sites which want T1 connectivity (we currently use Cylinks, which might be thought of as the "cadillac" of CSU/DSUs - many features, kinda pricey...) To this end, I'd appreciate hearing about experience that other networks have had with T1 CSU/DSUs made by various manufacturers. The following evaluation criteria are of particular interest: - Cost per unit (list price, price we can expect to get, discount plans offered, if any) - Does manufacuturer offer multi-unit "nest" (and if so, cost) - Framing options (D4 vs. ESF, etc.) - Line encoding options (AMI vs. B8ZS, etc.) - Maximum effective bandwidth (1344 vs. 1536); if full-T1, what scheme is used to guarentee one's density requirement is met Responses to vaf@stanford.edu - I'll summarize if there is interest. --Vince