Operational ip phone features – Aastra Telecom SISIP 57I CT User Manual
Page 284
Operational Features
5-156
41-001160-00, Rev 01 Release 2.0
IP Phone Administrator Guide
Operational IP Phone Features
The following table identifies the different Bellcore ring tone patterns and
cadences.
Bellcore Tone
Pattern
ID
Pattern
Cadence
Minimum
Duration
(ms)
Nominal
Duration
(ms)
Maximum
Duration
(ms)
(Standard)
1
Ringing
Silent
2s On
4s Off
1800
3600
2000
4000
2200
4400
Bellcore-dr2
2
Ringing
Silent
Ringing
Silent
Long
Long
Long
630
315
630
3475
800
400
800
4000
1025
525
1025
4400
Bellcore-dr3
3
Ringing
Silent
Ringing
Silent
Ringing
Silent
Short
Short
Long
315
145
315
145
630
2975
400
200
400
200
800
4000
525
525
525
525
1025
4400
Bellcore-dr4
4
Ringing
Silent
Ringing
Silent
Ringing
Silent
Short
Long
Short
200
145
800
145
200
2975
300
200
1000
200
300
4000
525
525
1100
525
525
4400
Bellcore-dr5
5
Ringing
450
500
550
Note:
If the "Do Not Disturb" (DND) or the "Call Forward" (CFWD)
feature is enabled on the server-side, and the user is still waiting for a call,
the "Bellcore-dr5" is a ring splash tone that reminds the user that these are
enabled.