Page 1295 of 1814International ISDN PRI Feature description and administration1300Network and Executive DistinctiveRingingContentsThe following are the topics in this section:Feature description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1295Operating parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1296Feature interactions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1296Feature packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1297Feature implementation . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1297Task summary list . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1297Feature operation . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1300Feature descriptionNetwork Distinctive Ringing (NDRG) allows a distinctive ringing cadence tobe configured throughout a Meridian network. Distinctive ringing is definedon a route basis. There are four NDRG distinctive ringing cadence indicesthat can be defined for a route. These indices are contained in the FlexibleTone and Cadences (FTC) table. If one of these indices has been defined fora route and an incoming trunk call over that route terminates on the localnode, the terminating set receives distinctive ringing. If the incoming calltandems to another node via an Integrated Services Digital Network (ISDN)TIE trunk, the terminating set at the terminating node receives distinctiveringing. This occurs if the TIE trunk has been marked as distinctive and if theNDRG feature is equipped at the terminating node; otherwise, normal ringingis given.
