In short, the 310 is an interface device between the Sutus Business Central 200 (BC200) and traditional phone lines (aka: POTS lines). POTS is a telephony term which stands for "Plain Old Telephone Service."
As the acronym POTS may imply it is a very old telephony standard, yet very stable. Until recently, this is the type of telephone service that has been supplied to most residential customers.
The Gateway 310 is NOT required if you are subscribed to receive VoIP based telephony services. In this case your telephone calls are carried over the same wires as your Internet service- more specifically by your Internet Service Provider. However, if using Fax services the Gateway 310 IS required. Fax standards are based on POTS lines. Some VoIP providers can provide Fax over VoIP (T.38 standards) but support varies from provider to provider.
PDF version
