1. i3forum : Terms of Reference WG “IMS-based services and related platforms’ interconnection”
Version 1 May 19th 2016

2. IMS-based services and related platforms’ interconnection Proposed Workplan ( 1 / 2)
Background: proposal based on
Discussions held with WG participants during latest 2016 meetings
Informal discussion with GSMA Net2020 Project
Ad-hoc meeting
Inputs received at 7th i3 forum Annual Conference from IMS roundtable attendees
Scope: After the 2nd deliverable (2016) on technical and commercial analysis on IMS it is proposed to focus on the interconnection use cases such as IMS hubbing, both for fixed and mobile (VoLTE) traffic, for transit and roaming services. ViLTE should be considered in a subsequent phase following the development in the Service Providers’ networks whereas RCS should consider the existing GSMA/Google cooperation for an universal profile and the Google/Jibe offering to Service Providers for hosting and hubbing.
Objectives: the primary objective is the release of a set of deliverables aiming to promote and facilitate the in-field implementation by Service providers and Int. Carriers of IMS (fixed and mobile) services. In the common interest of the industry, it is desirable to achieve these goals jointly with GSMA (and i3f WG”IMS” has already set-up an operational link with GSMA Net2020 on these issues). Specifically:
Not further development on IMS Signalling document Rel. 3
Splitting the existing IMS document Rel. 2 in 3 deliverables
IMS Business Models and related applications (Comm. oriented document): focusing on business models and the commercial/business part of VoLTE hubbing; VoLTE roaming, impact on billing of multiple IMS services (based on IMS Rel.2 doc. Sec. 6 plus others subsections to be extented)
IMS interface (Tech oriented document): focusing on the specification of the interlace and protocols across an IMS interface between SP and IPX Provider and between two IPX Providers. (based on IMS doc Rel.2 Sec. 5 Arch. + Sec. 7 Signalling + Sec. 8 Codecs + Sec. 10 Security including the Service Configuration material already discussed in past year)
IMS Use Cases (Tech/Operational oriented document): focusing on the discussion of different interconnection scenarios between IMS networks and between IMS and legacy network, discussing addressing/routing issues, QoS Monitoring, VoWifi, VolTE Hubbing and Roaming. Relationship of IMS services and related platforms of OTT providers should also be addressed. In this respect the interconnection with WebRTC-based platforms should be considered.

3. IMS-based services and related platforms’ interconnection Proposed Workplan ( 2 / 2)
Related fora : GSMA WG WAS and Network; 3GPP
Participants’ affiliation: IPX Providers, Vendors, i3f Partners, GSMA Members depending on the level of cooperation
Expertise required : mainly senior members of Network Technology/Architecture and Product Development Depts. with a deep knowledge of the IMS related business and/or technical impacts
Way of working : 4-5 physical meeting and 6-7 conference call.
Minimum participation : around a dozen of committed people
Target date : release of deliverables every 9 / 12 months. Provisional target date: APRIL The time schedule could change depending on possible joint GSMA/i3f objectives