Specifications

General Information
2-20 Issue 11 December 1999
External Ringing Tones
The following external ringing tone patterns are generated by the system:
For most currently available voice terminals, the user can select a Personalized
Ringing pattern (out of eight possible ringing patterns). The tone patterns are the
same as those previously described. The three tones are 530 Hz (low [L]), 750 Hz
Call Waiting Tones:
Internal
External or Handled
by Attendant
Priority Call
750 Hz + 20 Hz
750 Hz + 20 Hz
750 Hz + 20 Hz
100 on; not repeated
100 on, 100 off, 100 on;
not repeated
100 on, 100 off, 100 on,100 off,
100 on; not repeated
Coverage Tone 440 Hz 600 on, followed by silence;
not repeated
Confirmation Tone 350 Hz + 440 Hz 100 on, 100 off, 100 on,100 off,
100 on followed by silence;
not repeated
Dial Tone 350 Hz + 440 Hz Continuous
Intercept Tone 480 Hz & 620 Hz 250 on (480 Hz), 250 on (620 Hz);
repeated
Reorder Tone 480 Hz + 620 Hz 250 on, 250 off; repeated
Call Waiting Ringback
Tone
440 Hz + 480 Hz;
440 Hz
1000 on (440 Hz + 480 Hz),
200 on (440 Hz), 2800 off; repeated
* This tone is used with the Busy Verification and Executive Override features and Service Observing
when the warning tone is enabled.
Table 2-4. External Ringing Tone Patterns
Ringing Tone Pattern (In ms)
1 1200 on, 4000 off; repeated
2 400 on, 200 off, 600 on, 4000 off; repeated
3 200 on, 100 off, 200 on, 100 off, 600 on,
4000 off; repeated
Table 2-3. Call Progress Tones — Continued
Tone Frequency Pattern (In ms)