The Avire Memcom Lift Auto Dialler 453 211ML isn't a product we have experience with, but this Cisco ATA192 Multiplatform Analog Telephone Adapter is designed to take an analogue phone signal and allow it to be utilised in a digital environment such as an in-house VOiP phone system.
I'm not sure if this information helps, but the device is pretty simplistic in it's purpose so you may need to check with the guys at Avire.