We have an analog modem that we need to connect to our CCM 6.x solution. I read the ATA 186s don't support it. Do we need to use an FXS card in the router instead?
With ATA, the modem would work up to moderate speeds only, and require a perfect IP network.
An FXS port in the router doesn't have any limitation and is a much better solution.
Hope this helps, please rate post if it does!