Yealink SIP-T4X, Руководство администратора

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Administrator’s Guide for SIP-T4X IP Phones
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Distinctive ring tones allows particular 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 and keyword parameter and maps it to the appropriate
ring tone.
Alert-Info headers in the following four formats:
Alert-Info: localIP/Bellcore-drN
Alert-Info: ringtone-N (or Alert-Info: MyMelodyN)
Alert-Info: <URL>
Alert-Info: info=info text;x-line-id=0

If the Alter-Info header contains the keyword ―Bellcore-drN‖, and the parameter
―features.alert_info_tone‖ is set to 1, the IP phone will play the Bellcore-drN ring
tone (N=1, 2, 3, 4 or 5). Otherwise, the IP phone will play the preconfigured local
ring tone in about ten seconds.
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
Silent 145 200 525
Ringing Long 630 800 1025
Silent 2975 4000 4400
Bellcore-dr4 4 Ringing Short 200 300 525