Liaison statement
Comments on IETF PhoneBCP Draft
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State | Posted |
---|---|
Submitted Date | 2009-09-15 |
From Group | 3GPP |
From Contact | Susanna Kooistra |
To Group | IETF |
To Contacts | Hannes.Tschofenig@gmx.net marc.linsner@cisco.com fluffy@cisco.com gonzalo.camarillo@ericsson.com |
Purpose | For action |
Deadline | 2009-11-20 Action Taken |
Attachments | (None) |
Body |
3GPP TSG SA WG2 Meeting #75 S2-096100 31 August – 4 September, 2009, Kyoto, Japan Title: Comments on IETF PhoneBCP Draft Source: 3GPP TSG SA WG2 To: Hannes Tschofenig (Hannes.Tschofenig@gmx.net), Chairman IETF Ecrit Marc Linsner (marc.linsner@cisco.com), Chairman IETF Ecrit Cullen Jennings (fluffy@cisco.com), IETF Real-time Applications and Infrastructure Area Director Cc: IETF Ecrit Working Group 3GPP TSG CT WG1 3GPP TSG SA WG1 Contact Person: Name: Stephen Edge Tel. Number: +1-858-651-6234 E-mail Address: sedge@qualcomm.com Attachments: None 1. Overall Description: 3GPP TSG SA WG2 along with 3GPP TSG CT WG1 were requested by the TSG CT Chair on behalf of IETF Ecrit on May 6 to provide feedback on the issue of applicability of the phoneBCP draft to a cellular environment. The Email request was as follows: From: Hannu Hietalahti [mailto:hannu.hietalahti@NOKIA.COM] Sent: Wednesday, May 06, 2009 4:48 AM To: 3GPP_TSG_SA_WG2@LIST.ETSI.ORG Subject: Question on draft-ietf-ecrit-phonebcp Dear CT1, SA2, in the 3GPP - IETF telco earlier this week a question was brought up on whether the phonebcp IETF draft could be applicable on cellular systems or not: http://www.ietf.org/internet-drafts/draft-ietf-ecrit-phonebcp-09.txt We have got no dependency from 3GPP specifications and I am not saying that we should have. In the 3GPP - IETF telco I promised to ping the 3GPP groups working in the area of VoIP and emergency calls just in case someone might be able to help in this question. The question seems to be whether it would be justified or not to restrict the applicability area of the draft by excluding the use of it in cellular environment. Even if we are currenlty not directly referencing to the draft, for me it sounds a bit odd if IETF needs to start categorising SIP extensions to those that are applicable in cellular environment and to those that are not. If you think you can help to solve this, please keep the CC'd Cullen Jennings and Hannes Tschofenig in the discussion. BR, Hannu Hietalahti 3GPP TSG CT Chairman tel: +358 40 5021724 3GPP SA WG2 discussed the issue of applicability as well as interworking between the solution to support IP based emergency calls defined in the Ecrit phoneBCP draft and the solution defined by 3GPP in 3GPP TS 23.167. The consensus in SA2 is that these issues need further evaluation including an analysis of regulator requirements (e.g. by 3GPP SA1) to determine whether and how the Ecrit solution could apply to 3GPP networks. A suitable applicability statement to include in the phoneBCP draft, assuming it is intended to apply to any cellular network, would thus be "the applicability of this solution to 3GPP wireless networks requires further evaluation in 3GPP". 2. Actions: To IETF Ecrit group. ACTION: 3GPP SA2 requests IETF Ecrit to take the above comments and recommendation into account when finalizing the phoneBCP draft. 3. Date of Next TSG-SA WG2 Meetings: TSG-SA2 Meeting #76 16th – 20th November 2009 San Jose Del Cabo, Mexico TSG-SA2 Meeting #77 18th – 22nd January 2010 China |