Re: [sipcore] Question about RFC5009
Birwipfel Robert <Robert.Birwipfel@A1.at> Mon, 03 October 2022 05:23 UTC
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From: Birwipfel Robert <Robert.Birwipfel@A1.at>
To: "Avasarala, Ranjit (Nokia - US/Naperville)" <ranjit.avasarala@nokia.com>
CC: "sipcore@ietf.org" <sipcore@ietf.org>
Thread-Topic: [sipcore] Question about RFC5009
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Date: Mon, 03 Oct 2022 05:22:56 +0000
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Subject: Re: [sipcore] Question about RFC5009
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Hi Ranjit, thank you for the response. The purpose of PEM it's clear for me, but I do have a SBC (P-CSCF) which allows the control of early media with the PEM after it receives an SDP answer. In my opinion the SDP answer is not needed to forward media packets. Ich the standard it's not clearly state if an SDP offer/answer is needed for early media control or not. My question is if the early media handling is independently from media negotiation and the SBC behaves wrong? Thank you! Best regards Robert Von: Avasarala, Ranjit (Nokia - US/Naperville) <ranjit.avasarala@nokia.com> Gesendet: Freitag, 30. September 2022 17:27 An: Birwipfel Robert <Robert.Birwipfel@A1.at>; sipcore@ietf.org Betreff: RE: [sipcore] Question about RFC5009 Hi Robert The purpose of PEM (P-Early-Media header) is to request and authorize the use of early media in networks that have a policy that prevents or prohibits the exchange of early media between end users So if the network in which you are working has no such policy, then u don't need PEM or its becomes redundant. Regards Ranjit From: sipcore <sipcore-bounces@ietf.org<mailto:sipcore-bounces@ietf.org>> On Behalf Of Birwipfel Robert Sent: Friday, September 30, 2022 3:40 AM To: sipcore@ietf.org<mailto:sipcore@ietf.org> Subject: [sipcore] Question about RFC5009 Hi all, I do have a general question about the RFC5009. Is the offer/answer (SDP) mandatory to use the PEM header or is it enough to send the offer only, because if I have the offer received I am able to reply with a 18x incl. PEM with sendonly and send RTP. E.G.: INVITE (SDP) incl. PEM supported -> <- 183 Session Progress incl. PEM:sendonly Or is this mandatory INVITE (SDP) incl. PEM supported -> <- 183 Session Progress (SDP) incl. PEM:sendonly Thank you! Best regards Robert Ing. Robert Birwipfel Technology Signalling & Voice Interconnect A1 Telekom Austria AG Arsenal Objekt 22 1030 Wien M +43 664 66 21897 T +43 50 664 21897 F +43 50 664 9 21897 @ robert.birwipfel@a1.at<mailto:robert.birwipfel@a1.at> A1.net<http://www.a1.net/> Facebook.A1.net<https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Ffacebook.a1.net%2F&data=05%7C01%7CRobert.Birwipfel%40A1.at%7Cd0a625bc6b164cf85ea308daa2f841a4%7C26a1e041d3a24d59a14aacaedd98e798%7C0%7C0%7C638001484399972042%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=wBj%2BZyDEiD4djZawlOkgI5%2Bq3xx0m4HXVenlwaEFyKM%3D&reserved=0> A1 Podcast<https://www.a1.net/connectlife/pd/podcast/> A1stories.com<https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.a1stories.com%2Fde%2F&data=05%7C01%7CRobert.Birwipfel%40A1.at%7Cd0a625bc6b164cf85ea308daa2f841a4%7C26a1e041d3a24d59a14aacaedd98e798%7C0%7C0%7C638001484399972042%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=pHcKeyBs7XjTOaGpzXLYrXc5Lo05kgoovOH6Bl2eEZE%3D&reserved=0> Firmensitz Wien FN: 280571f Handelsgericht Wien [cid:image001.jpg@01D8D6F8.C6772480]<https://www.a1.net/glasfaser-internet> Ohne Dich ist unser Netz nur ein Netz. Jetzt Du.
- [sipcore] Question about RFC5009 Birwipfel Robert
- Re: [sipcore] Question about RFC5009 Avasarala, Ranjit (Nokia - US/Naperville)
- Re: [sipcore] Question about RFC5009 Birwipfel Robert
- Re: [sipcore] Question about RFC5009 Avasarala, Ranjit (Nokia - US/Naperville)
- Re: [sipcore] Question about RFC5009 Birwipfel Robert