Operation Manual

Chapter 7
Phone
Introduction to FXS Ports
A Foreign Exchange Station (FXS) interface connects directly to a standard
analog telephone, fax machine or similar device and supplies ring, voltage
and dial tone. In AT-RG213, FXS ports are assigned to tel1 and tel2, that
correspond respectively to physical port 0 and 1 and support only analog
telephones.
In the next paragraphs, the main functions and features of FXS analogue
interface and the specification of the PSTN line management in AT-RG213
device are described.
PSTN Line management
Table 19 shows how the PSTN line is managed in the various cases.
Note that if a port is not created, then no tone will be provided.