Aastra Telecom 57I CT - Manual (Page 24)

Features in Release 2.1.1
20 RN-001029-00, Rev 04, Release 2.1.1
IP Phone Release Notes 2.1.1
The following table identifies the different Bellcore ring tone patterns and
cadences.
The Bellcore cadences in the above table are now configurable using the
configuration files only.
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