Operational Features5-154 41-001160-00, Rev 01 Release 2.0IP Phone Administrator GuideOperational IP Phone Features Sylantro ServersThe ring tone keywords that can display in the "Alert-Info" header for a Sylantroserver are:When the ring tone keywords appear in an "Alert-Info" header from a Sylantroserver, the keyword is mapped to the ring tone pattern based on the configurationyou set in the Aastra Web UI or the configuration files.Ring Tone PatternsIn IP Telephony, different ringing patterns have different frequencies andcadences. Ring cadence is the ringing pattern heard by the called party, beforethey pick up the call.On the IP phones, if you enable priority alerting when using an Asterisk orBroadworks server, the IP phone uses the following Bellcore-specified tones bydefault:Ring Tone Pattern (Asterisk/Broadworks Servers)Sylantro SesrverRing Tone Keywordsalert-acd (auto call distribution)alert-community-1alert-community-2alert-community-3alert-community-4alert-emergencyalert-externalalert-groupalert-internalalert-priorityCall Criteria Bellcore Tonesinternal calls Bellcore-dr2external calls Bellcore-dr3calls with contact list Bellcore-dr4calls with specific time frames Bellcore-dr5