I've run across the "feature request" for distinctive ringing in three different locations/bids now, where Asterisk is being compared to "traditional telephony" using SIP. Thus far, I haven't been able to answer "Yes" but it looks like with only a minor hack, I could check off that box. It's not a show-stopper, but it certainly would be handy.
Interesting feature on the Cisco 79xx phones that you can activate distinctive ringing with an additional SIP header. It would be really useful to permit this as a set-able variable in a dialplan, so that different inbound callers might activate different ringtones, or the same ringtone in a quieter format based on time of day.
From the SIP Administrator's Guide:
http://www.cisco.com/univercd/cc/td/doc/product/voice/c_ipphon/sip7960/sipadm42/sipadm42.pdf
Distinctive alerting
If the INVITE message contains an Alert-Info header, distinctive ringing is invoked. The format of
the header is "Alert-info: x". The value of "x" can be any number. This header is received only by
the phone and is not generated by the phone.
Distinctive ringing is supported when the phone is idle or during a call. In the idle mode, the phone rings with a different cadence. The selected ringing type plays twice with a short pause in between. In call-waiting mode, two short beeps are generated instead of one long beep.
JT _______________________________________________ Asterisk-Dev mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-dev
