Two slots are available for inserting optional POTS modules into the codec. These can be configured using the codec front panel or the Toolbox graphical user interface (GUI). See About POTS Modules for additional information on POTS.
You can use the Web-GUI to configure a dial and/or answer program with POTS settings. You may also need to:
1.Configure POTS module settings.
2.Configure POTS Answering settings.