Use this option to determine the type of ringing at analog single line extensions. If enabled, analog
single line extensions always receive single ringing for outside calls. (Certain analog single line devices
connected to the system may require this type of ringing.) If disabled, line ringing at analog single line
extensions follows the ringing pattern of the line. For example, if a line is ringing the system with two
ring bursts, the single line extensions will follow the same ringing pattern.