41-001343-01 Rev 02, Release 3.2.2
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Priority Alerting
Priority alerting on the IP phones is a feature that allows incoming calls to trigger pre-defined
ringing or call waiting alert tones.
You can enable or disable priority alerting on the IP phone for the Asterisk, Broadworks, and
Sylantro servers using the configuration files and the Aastra Web UI. Configuration of priority
alerting is on a global-basis only.
How Priority Alerting Works
When the IP phone detects an incoming call, the phone firmware inspects the INVITE request in
the IP packet for an "Alert-Info" header.
If it contains an "Alert-Info" header, the firmware strips out the URL and keyword parameter and
maps it to the appropriate Bellcore tone.
If there is no keyword parameter in the "Alert-Info" header, or the INVITE message contains no
"Alert-Info" header, then the IP phone firmware uses the Bellcore standard ring tone.
Asterisk/Broadworks Servers
The ring tone keywords that can display in the "Alert-Info" header for an Asterisk and Broadworks
server are:
When the ring tone keywords appear in an "Alert-Info" header from an Asterisk or Broadworks
server, the IP phone maps the keywords to the default ring tone patterns.
Example
The following are examples of the the Asterisk/Broadworks Server ring tone keywords:
Alert-Info: <http://127.0.0.1/Bellcore-dr2>
or
Alert-Info: <Bellcore-dr2>
Asterisk/Broadworks Server
Ring Tone Keywords
Bellcore-dr2
Bellcore-dr3
Bellcore-dr4
Bellcore-dr5
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