Does anyone know of a good RAS product that supports the fast train times needed for point of sale terminals (specifically the ability to turn off data compression, error detection, and speed negotiation)? Most every one I've seen is aimed at serving as-fast-as-possible dialup network access to normal modems, but I need something that will do 1200bps (or even better yet, v.22FC) with no frills.

Can anyone suggest a product or manufacturer?

We use the Cisco AS5400 in which you can enable/disable any option as you see fit using resource pooling. We use it to support KFLEX modems which fail to connect properly w/ the v.92 tones. The way it deterimes which settings to use is based on called station id. We also find modems that try to to retain to highest speed tend to reach the limit and drop the connection. Most of our customers are in rural areas w/ poor quality phone lines. We found it was easier to create resource groups to lock people to 21000 baud via setting their connection number than giving the customer init strings to limit the connection that way. Sure there are probably better solutions, but this has solved nearly all connection problems we've seen. I realize you may end up not using cisco, but I'll include a small example just in case it's useful to anyone. IOS (tm) 5400 Software (C5400-IS-M), Version 12.3(1a), RELEASE SOFTWARE (fc1) resource-pool enable ! resource-pool group resource MICA-modems range port 1/0 1/107 range port 2/0 2/107 range port 3/0 3/107 range port 4/0 4/107 range port 5/0 5/107 range port 6/0 6/107 ! resource-pool profile customer any limit base-size all limit overflow-size all resource isdn-ports digital resource MICA-modems speech service any dnis group default ! resource-pool profile customer v90 limit base-size all limit overflow-size all resource MICA-modems speech service v90 dnis group v90 ! resource-pool profile customer k56flex limit base-size all limit overflow-size all resource MICA-modems speech service k56flex dnis group k56flex ! resource-pool profile customer v34-28800 limit base-size all limit overflow-size all resource MICA-modems speech service v34-28800 dnis group v34-28800 ! resource-pool profile service v90 modem min-speed any max-speed 56000 modulation v90 ! resource-pool profile service k56flex modem min-speed any max-speed any modulation k56flex ! resource-pool profile service v34-28800 modem min-speed any max-speed 28800 modulation v34 ! resource-pool profile service any dialer dnis group v90 number 2533219668 number 3605459668 [trimed] ! dialer dnis group k56flex number 3605429667 number 3605459667 [trimed] !