RE: draft-ietf-mmusic-sip-session-timer-00.txt
Pat.Calhoun@Eng.Sun.COM (Patrice Calhoun) Fri, 12 February 1999 20:50 UTC
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From: Pat.Calhoun@Eng.Sun.COM
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Date: Fri, 12 Feb 1999 12:45:31 -0800
To: "Donovan, Steven R. (MCI)" <Steven.R.Donovan@mci.com>, Jonathan Rosenberg <jdrosen@dnrc.bell-labs.com>, "'Pat.Calhoun@Eng.Sun.COM'" <Pat.Calhoun@Eng.Sun.COM>
Cc: Douglas Clowes <dclowes@ozemail.com.au>, "'confctrl@ISI.EDU'" <confctrl@ISI.EDU>, "'iptel@lists.research.bell-labs.com'" <iptel@lists.research.bell-labs.com>
Reply-To: Pat.Calhoun@Eng.Sun.COM
Subject: RE: draft-ietf-mmusic-sip-session-timer-00.txt
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>This is an interesting discussion, however I'm not sure that we are going to >get answers to the questions that Pat is asking. Only time will tell how >services providers make money off of IP based telephony services. > >However, this is not the purpose of proposing the addition of the session >timer to the SIP protocol. The primary purpose is to give the stateful SIP >Proxy Server a method of determining the validity of the individual sessions >for which it is keeping state. > >Are there comments on the mechanisms proposed in the session-timer draft? Yes, and I appologize for side-tracking the whole thread. Is there anyway that we could have shorter INVITEs (perhaps the SIP Server can determine the length of a session), and have the SIP Client re-register with the server periodically, such as: SIP Client --------- INVITE ------------> SIP Server (some stuff happens here) SIP Client < ------- ACK (3 mins) ------- SIP Server (2 mins 45 seconds pass, enough to allow for retransmissions) SIP Client ---------- FOOBAR -----------> SIP Server (where FOOBAR is some message that refreshes the session) This would allow the SIP Server to have soft-state and time out any sessions that have not been re-registered (or foobar'ed in the above example). PatC > >Steve > >> -----Original Message----- >> From: Pat.Calhoun@Eng.Sun.COM [SMTP:Pat.Calhoun@Eng.Sun.COM] >> Sent: Friday, February 12, 1999 9:39 AM >> To: Jonathan Rosenberg; Pat.Calhoun@Eng.Sun.COM >> Cc: Donovan, Steven R. (MCI); 'iptel@lists.research.bell-labs.com'; >> 'confctrl@ISI.EDU'; Douglas Clowes >> Subject: Re: draft-ietf-mmusic-sip-session-timer-00.txt >> >> >> >Patrice Calhoun wrote: >> >> >> >> My only concern here is how does the service provider offer a service >> *and* >> >> make at least enough money to recover the capital costs (of course, >> certain >> >> providers may want to cover many additional costs, which is outside the >> scope >> >> of this discussion :). >> > >> >It comes back to the same question thats been brought up here on >> >numerous occassions - what are you billing for? SIP provides the setup >> >services, not the transport services. So, it makes sense for a SIP >> >server to charge for what it actually does - set the call up. It really >> >doesn't make sense, I don't think, to try to bill by the minute for the >> >SIP part of the call, since its really a transaction service. SIP is >> >only one part of the picture, though. There is also transport service - >> >diffserv prioritization, for example. A service provider can happily >> >charge by the minute,bit, packet, or whatever here. >> > >> >> This is perhaps my mis-understanding. I have been working with the TIA >> recently >> and they have adopted MobileIP/DIAMETER for the next generation cellular >> data networks. When one considers voice over IP using IP cellular phones, >> one >> quickly wonders how the charging will really work. Yes, it is true that >> one >> will charge for network access, but conceivably, one could also charge for >> calls as well. This is especially true if these calls span providers. >> >> Perhaps I have all of this wrong. I understand that charging for an LDAP >> query cannot amount to much, and perhaps that is all bundled as part of >> the >> access charge. Are there any providers on this list that have an idea on >> how >> they will actually bill for these services? >> >> PatC >> >> >> --------- >> This message came from the IETF IPTEL Working Group Mailing List.
- draft-ietf-mmusic-sip-session-timer-00.txt Donovan, Steven R. (MCI)
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Donovan, Steven R. (MCI)
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Patrice Calhoun
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Jonathan Rosenberg
- RE: draft-ietf-mmusic-sip-session-timer-00.txt John Hearty
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Donovan, Steven R. (MCI)
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Patrice Calhoun
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Douglas Clowes
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Patrice Calhoun
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Francois Menard Distribution List Management Account
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Patrice Calhoun
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Douglas Clowes
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Douglas Clowes
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Jonathan Rosenberg
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Henning Schulzrinne
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Francois Menard Distribution List Management Account
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Jonathan Rosenberg
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Vipin Palawat
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Patrice Calhoun
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Patrice Calhoun
- RE: RE: draft-ietf-mmusic-sip-session-timer-00.txt Francois Menard
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Jonathan Rosenberg
- RE: RE: draft-ietf-mmusic-sip-session-timer-00.txt Sean Olson
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Donovan, Steven R. (MCI)
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Patrice Calhoun
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Dean Willis
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Douglas Clowes
- RE: RE: draft-ietf-mmusic-sip-session-timer-00.txt Donovan, Steven R. (MCI)
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Donovan, Steven R. (MCI)
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Donovan, Steven R. (MCI)
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Patrice Calhoun
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Patrice Calhoun
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Dean Willis
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Patrice Calhoun
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Jonathan Rosenberg
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Douglas Clowes
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Jerome Privat
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Patrice Calhoun
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Jonathan Rosenberg
- Re: draft-ietf-mmusic-sip-session-timer-00.txt John Hearty
- Re: draft-ietf-mmusic-sip-session-timer-00.txt John Hearty
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Lewis McCarthy
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Jonathan Rosenberg
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Dean Willis
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Jonathan Rosenberg
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Dean Willis
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Jonathan Rosenberg
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Aishling
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Henning Schulzrinne
- RE: draft-ietf-mmusic-sip-session-timer-00.txt Dean Willis
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Mark Handley
- Re: draft-ietf-mmusic-sip-session-timer-00.txt Henning Schulzrinne
- clients and servers Scott Petrack