How to determine the required Ringing Frequency?
Ringing signals transmitted over public telephone networks are generally governed by the local authorities and are specified in the telecom standards. Before designing a system, one should consult the telecom standards that apply at the system’s destination in order to determine which ringing frequency is required. Note that PowerDsine Ring Generators support all popular international ringing frequencies. Most models are equipped with a digitally selectable output frequency option. This feature is especially valuable for systems that are aimed at a variety of destinations.
