The value of the Alert-Info header in the incoming SIP INVITE message determines the ring tone that your telephone plays for an incoming call. If you can configure the value of this header on the remote end, you can control the incoming ring tone of your telephone.

For example, you can invoke distinctive-ring-tone 2 on extension 5103 by adding the following line to the extensions.con file on an Asterisk server.

    exten => 5103,1,Set(_ALERT_INFO=<Bellcore-dr2>)

The following describes the Bellcore ring tones and associated call-waiting tones that your telephone supports, as defined in GR-506-CORE and GR-526-CORE. If your telephone is in a call already, it plays the call waiting tone that is associated with the specified ring tone.

Priority Tones

• Bellcore priority 1 - standard phone ring cycle
  
  Alert-Info string: <Bellcore-dr1>
  Corresponding Call Waiting Tone: Call Waiting priority 1
  
  Number of States = 3;
  State1 = ToneOn;
  State1 Length = 2000;
  State1 Freq1 = 725;
  State1 Freq2 = 750;
  
  State2 = ToneOff;
  State2 Length = 4000;
  
  State3 = ToneRepeat;
  State3 Reps = 0;
• Bellcore priority 2 – "Long-Long"
  
  Alert-Info string: <Bellcore-dr2>
  Corresponding Call Waiting Tone: Call Waiting priority 2
  
  Number of States = 5;
  State1 = ToneOn;
  State1 Length = 800;
  State1 Freq = 725;
  State1 Freq2 = 750;
  
  State2 = ToneOff;
  State2 Length = 400;
  
  State3 = ToneOn;
  State3 Length = 800;
  State3 Freq1 = 725;
  State3 Freq2 = 750;
  
  State4 = ToneOff;
  State4 Length = 4000;
  
  State5 = ToneRepeat;
  State5 Reps = 0;
• Bellcore priority 3 – "Short-Short-Long"
  
  Alert-Info string: <Bellcore-dr3>
  Corresponding Call Waiting Tone: Call Waiting priority 3
  
  Number of States = 7;
  State1 = ToneOn;
  State1 Length = 400;
  State1 Freq1 = 725;
  State1 Freq2 = 750;
  
  State2 = ToneOff;
  State2 Length = 200;
  
  State3 = ToneOn;
  State3 Length = 400;
  State3 Freq1 = 725;
  State3 Freq2 = 750;
  
  State4 = ToneOff;
  State4 Length = 200;
  
  State5 = ToneOn;
  State5 Length = 800;
  State5 Freq1 = 725;
  State5 Freq2 = 750;
  
  State6 = ToneOff;
  State6 Length = 4000;
  
  State7 = ToneRepeat;
  State7 Reps = 0;
• Bellcore priority 4 – "Short-Long-Short"
  
  Alert-Info string: <Bellcore-dr4>
  Corresponding Call Waiting Tone: Call Waiting priority 4
  
  Number of States = 7;
  State1 = ToneOn;
  State1 Length = 300;
  State1 Freq1 = 725;
  State1 Freq2 = 750;
  
  State2 = ToneOff;
  State2 Length = 200;
  
  State3 = ToneOn;
  State3 Length = 1000;
  State3 Freq1 = 725;
  State3 Freq2 = 750;
  
  State4 = ToneOff;
  State4 Length = 200;
  
  State5 = ToneOn;
  State5 Length = 300;
  State5 Freq1 = 725;
  State5 Freq2 = 750;
  
  State6 = ToneOff;
  State6 Length = 4000;
  
  State7 = ToneRepeat;
  State7 Reps = 0;
• Bellcore priority 5 - Short - "Ringsplash"
  
  Alert-Info string: <Bellcore-dr5>
  Corresponding Call Waiting Tone: Call Waiting priority 4
  
  Number of States = 1;
  State1 = ToneOn;
  State1 Length = 500;
  State1 Freq1 = 725;
  State1 Freq2 = 750;

Call-Waiting Tones

• Bellcore Call Waiting priority 1 - standard Call Waiting cycle
  
  Number of States = 1;
  State1 = ToneOn;
  State1 Length = 300;
  State1 Freq1 = 440;
  State1 Freq2 = 440;
• Bellcore Call Waiting priority 2 - Call Waiting Priority 2 cycle
  
  Number of States = 3;
  State1 = ToneOn;
  State1 Length = 100;
  State1 Freq1 = 440;
  State1 Freq2 = 440;
  
  State2 = ToneOff;
  State2 Length = 100;
  
  State3 = ToneOn;
  State3 Length = 100;
  State3 req1 = 440;
  State3 Freq2 = 440;
• Bellcore Call Waiting priority 3 - Call Waiting Priority 3 cycle
  
  Number of States = 5;
  State1 = ToneOn;
  State1 Length = 100;
  State1 Freq1 = 440;
  State1 Freq2 = 440;
  
  State2 = ToneOff;
  State2 Length = 100;
  
  State3 = ToneOn;
  State3 Length = 100;
  State3 Freq1 = 440;
  State3 Freq2 = 440;
  
  State4 = ToneOff;
  State4 Length = 100;
  
  State5 = ToneOn;
  State5 Length = 100;
  State5 Freq1 = 440;
  State5 Freq2 = 440;
• Bellcore Call Waiting priority 4 - Call Waiting Priority 4 cycle
  
  Number of States = 5;
  State1 = ToneOn;
  State1 Length = 100;
  State1 Freq1 = 440;
  State1 Freq2 = 440;
  
  State2 State = ToneOff;
  State2 Length = 100;
  
  State3 = ToneOn;
  State3 Length = 300;
  State3 Freq1 = 440;
  State3 Freq2 = 440;
  
  State4 = ToneOff;
  State4 Length = 100;
  
  State5 = ToneOn;
  State5 Length = 100;
  State5 Freq1 = 440;
  State5 Freq2 = 440;

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