Dial Tone Italia Grandstream
ADVANCED SETTINGS System Ring Cadence: c=2000/4000; Call Progress Tones Dial Tone: f1=425@-14,f2=425@-14,c=200/200-600/1000; Ringback Tone: f1=440@-19,f2=480@-19,c=2000/4000; Busy Tone: f1=480@-24,f2=620@-24,c=500/500; Reorder Tone: f1=480@-24,f2=620@-24,c=250/250; Confirmation Tone: f1=350@-11,f2=440@-11,c=100/100-100/100-100/100; Call Waiting Tone: f1=440@-13,c=300/10000-300/10000-0/0; Prompt tone: f1=350@-13,f2=440@-13,c=0/0;