I hear echo when on the RJ11/POTS call. How can I get rid of it?

Beam docking stations/terminals with POTS interface has a configurable impedance and adaptive hybrid machine.

Settings can be adjusted using the product's respective software management tool.

Try alternate impendence settings and choose the settings that produces the least echo.

Also make sure that the volume of the terminal is not on the highest setting as this will create echo, try turning it down a little.