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Administrator’s Guide for SIP-T46G IP Phone
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appropriate ring tone.
The Alert-Info header is in the following two formats:
Alert-Info: localIP/Bellcore-drN
Alert-Info: <URL>;info=info text;x-line-id=0
 If the Alter-Info header contains the keyword ―Bellcore-drN‖, the IP phone will play
the Bellcore-drN ring tone (N=1,2,3,4,5).
Example:
Alert-Info: http://127.0.0.1/Bellcore-dr1
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)
Bellcore-dr1
(standard)
1
Ringing
2s On
1800
2000
2200
Silent
4s Off
3600
4000
4400
Bellcore-dr2
2
Ringing
Long
630
800
1025
Silent
315
400
525
Ringing
Long
630
800
1025
Silent
3475
4000
4400
Bellcore-dr3
3
Ringing
Short
315
400
525
Silent
145
200
525
Ringing
Short
315
400
525
Silent
145
200
525
Ringing
Long
630
800
1025
Silent
2975
4000
4400
Bellcore-dr4
4
Ringing
Short
200
300
525
Silent
145
200
525
Ringing
Long
800
1000
1100
Silent
145
200
525
Ringing
Short
200
300
525
Silent
2975
4000
4400
Bellcore-dr5
5
Ringing
450
500
550
Note
―Bellcore-dr5‖ is a ring splash tone that reminds the user that DND or Always Call
Forward feature is enabled on the server-side.