Yealink SIP-T2XP, Руководство администратора

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Administrator’s Guide for SIP-T2xP IP Phones
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Distinctive ring tones allows certain incoming calls to trigger IP phones to play distinctive
ring tones. The IP phone inspects the INVITE request for an "Alert-Info" header when
receiving an incoming call. If the INVITE request contains an "Alert-Info" header, the IP
phone strips out the URL or keyword parameter and maps it to the appropriate ring
tone.
Note
Alert-Info headers in the following four formats:
Alert-Info: 127.0.0.1/Bellcore-drN (or Alert-Info: Bellcore-drN)
Alert-Info: ringtone-N (or Alert-Info: MyMelodyN)
Alert-Info: <URL>
Alert-Info: info=info text;x-line-id=0

When the Alter-Info header contains the keyword “Bellcore-drN”, the IP phone will
play the Bellcore-drN (N=1, 2, 3, 4 or 5) ring tone if the parameter
“features.alert_info_tone” is set to 1, or play the corresponding local ring tone
(RingN.wav) in about ten seconds if the parameter “features.alert_info_tone” is set
to 0.
Example:
Alert-Info: http://127.0.0.1/Bellcore-dr1
The following table identifies the different Bellcore ring tone patterns and
cadences (These ring tones are designed for the BroadWorks server).
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
If the caller already exists in the local directory, the ring tone assigned to the caller
should be preferentially played.