Hello Denis, Please see inline:
-----Original Message----- From: ext Alexeitsev, D [mailto:[EMAIL PROTECTED] Sent: 02 September, 2008 17:26 To: Mutikainen Jari (Nokia-D-MSW/Helsinki) Cc: [email protected] Subject: AW: [BLISS] Alert-Info URNs Hi Jari Comments inline Hello, In my understanding the Alert-Info has been specified for INVITE and 180 only. Quite many of the examples below do not make sense in INVITE or 180. [DA] Could you point to the examples that make no sense? [Jari] If I start from the top of the list, there are high tone and low tone, which I have no idea what they are. Then the next one is dial tone, so let's concentrate on this. Dial tone is a tone which is given to the caller when he/she picks up the phone, before making any dialling. By hearing the dial tone, the caller knows the "line is free". This is implemented only in legacy fixed phones, e.g. mobile phones do not have a dial tone. What meaning the sending of the dial tone could have in INVITE or 180? Once the INVITE hits the callee, the playing of the dial tone to the caller has been discontinued a long time ago. How about 180, does it indicate that the dial tone should be played to the caller in alerting phase? In any case, to me it seems that the CW is the only real problem what needs to be solved in this I-D, everything else seems to be imaginary, is there really a need for a generic framework? [DA] Do you have a proposal on how to solve the issues without having a generic framework? [Jari] Yes, let's use 181+180, or if that is not sufficient for some reason (which reason I would like to read from the I-D), 180 with Alert-Info with a CW indication. In addition, the I-D could describe why 181 is not sufficient solution. [DA] What use case do you have in mind that can be solved by using 181? [Jari] The CW use case: how to indicate to the caller that the callee is alerting but busy with another call. I think this was the original problem to be solved? BR, Jari Greetings, Denis Alexeitsev _______________________________________________ BLISS mailing list [email protected] https://www.ietf.org/mailman/listinfo/bliss
