1. Video Interoperability
July 8, 2015
Sumitra Sinha (Lead)
Dan Druta
Sri Narahari

2. Outline
Problem Statement - Current vendor/technology-centric implementations & limitations
Objectives – Standard Compliant Interoperable Video Solutions
Scope – Interoperability for Network and end point Video Capabilities including WebRTC and RCS/IR.94
Enabler Functions for Signaling, Media, Content Sharing & other feature Interoperability
Desired vision for a fully Interoperable Video Solution
Use Cases
Interoperability between 2 Service Providers’ platforms

3. Current Multi-technology and Multi-vendor Implementations
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4. Problem Statement
Presently, multi-technology and multi-vendor solutions are available to provide Real-Time/On Demand video capabilities in the market place, serving segmented video endpoints/devices.
These isolated implementations of video services increase the infrastructure and operational cost.
This lack of “any-to-any” platform/device interoperability imposes some limitations on the end users when choosing services for their devices, hindering the Operators’ current investment and revenue stream.
Due to Technology and device centric and silo’d implementations of Video Services, there is a compelling need for Service Providers/Operators to build more collaborated and seamless solutions, serving any video capable end points across any Service Provider's network (e.g. wireless, wireline), in an “any-to-any” environment.

5. Objectives
Conduct a high-level analysis to identify the gaps for interoperable Video Solutions
Leverage the existing standards/Interfaces and identify the new Enabler Functions to align the video solutions while protecting the current investment
Access & Signaling Level
Media and Content Level
Other Interoperability Functions (e.g. Centralized Routing Registry)
Recommend a set of guidelines/requirements to address the Video Interoperability issues in the following scenarios:
Cross Platform Technology/Standards /Implementations
Cross Operators/SPs’ Network Implementations

6. Interoperable Video Capabilities In Scope
An Interoperable Video Solution will support the following capabilities :
HD Video Conferencing Applications (IMS/Non-IMS Platforms)
One to one/Multiparty Video Conferencing between multi-vendor Conferencing Platforms
Both advanced or ad-hoc reservation capabilities
Dial-out Capability to another Conferencing Bridge or end User using SIP URI/E.164
Recording and retrieving a Video Session content
Video Calling (one to one and multi-party) over RCS/ IR.94
Inter-Carrier Video Calling
Video Share/Video Chat - Video Share within an IM Chat session
Video Streaming
Note: This study does not specify any internal design or implementation details of the video platforms or applications addressed here.

7. Access & Signaling Interoperability

8. Key Functional Enablers for an Any-To-Any Interoperable Video Solution
Need Access & Signaling Level Interoperability
SBC/Expanded SBC (Web to SIP Conversion Function) - Support interconnect* and signaling interoperability among IMS SIP, SIP, IR.94, WebRTC browsers and Group System endpoints
DBF(Data Border Function) – Support Data/web Protocol related interworking for web end points
API Gateway - Support a common set of API access to interwork with the 3rd Party/Service Providers/developers’ capabilities (e.g. Scheduling API)
Other Protocols/Standards (e.g. TIP) – Support interoperability with Tele-Presence Video Platforms/Endpoints without using Interworking Gateway Functions (for media negotiations)
*JOINT ATIS/SIP FORUM TECHNICAL REPORT – IP NNI PROFILE (ATIS – SIP Forum TWG-6)

9. Media and Content Level Interoperability

10. Key Functional Enablers for an Any-To-Any Interoperable Video Solution
Need Media & Content Level Interoperability
SBC/BGF, MRF and Bridging Function (MCU) – Support a common set of compatible bridging and Interoperating capabilities among multi vendor video conference platforms/applications, e.g. Intra-company, Inter-company, Inter-Service Providers, dial-out features
Transcoding Pool, SBC/BGF and MRF - Support for a common set of Audio/Video (H.264, H.265, VP8/VP9, RTV/RDP etc.) codecs to provide Media Interoperability for incompatible video end points (AVC, SVC etc.)
TIP Support – Support interoperability with Tele-Presence Video Platforms/Endpoints without using Interworking Gateway Functions
Data Sharing - Support a set of common Content sharing Protocols. Support interworking/conversion of H.239 content sharing to SIP BFCP/ and vice versa

11. Other Interoperability Functions

12. Key Functional Enablers for an Any-To-Any Interoperable Video Solution
Need a common set of NNI requirements
Support the requirements described in JOINT ATIS/SIP FORUM TECHNICAL REPORT – IP NNI PROFILE (ATIS – SIP Forum TWG-6)
Need a common set of HD video resolution support
Support a minimum set of common video resolution display of 720p at 30fps, up to 1080p for high-end quality display
Need Security Interoperability
Support a set of common encryption mechanisms
Support SRTP, TLS for Media encryption across multi-vendor platforms
Need Interoperability for Routing/Addressing Management
Support a common centralized Routing Directory
Support a common Carrier/Operator/Enterprise/customer-facing directory for all (IMS/Non-IMS) end-points
Enable usage of E.164 telephone number dialing in addition to URI and Social Identity etc.
Support International dialing when available

13. Key Functional Enablers for an Any-To-Any Interoperable Video Solution (Con’t)
Need Bandwidth Management mechanisms (Compliant with OVCC requirements) thru MCU/MRF
Support a common set of network QOE capabilities (e.g. HEVC, SVC)
Need Inter-network Billing, Network Management and Operational Interoperability Support
Support a common mechanism to generate billing records across the multi-vendor platforms
Support common Standards to manage the agreed upon SLAs across the multi- technology platforms

14. Future Interoperable Video Solutions
IMS Platforms
Non-IMS Platforms
IMS SIP
SIP
http/Internet/API
Interworking Calls
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15. Key Takeaways
Develop fully interoperable Video Platforms/Solutions based on a common set of proposed Standards/guidelines and promote any-to any collaboration in Cloud environment
Drive new Capabilities and Standards
Address integration of API access, WebRTC and VoLTE RCS/IR.94 end points to be compatible with the emerging standards
Create new Video capabilities (e.g. Unified Communication) for Enterprise/ 3rd Party Service Providers/OTT endpoints via API/Interworking functions over LTE/Internet
Validate the Architecture functions thru Lab POCs

16. Use Case

17. Use Case: Interoperability between two Service Providers’ Video Platforms
SVC. Provider A
SVC. provider B
HD Video Conf. AS
(MRB/MRF)
Private
Dir. 4
Non-IMS SIP Trunk
H.264 Video 3 9
Control Server 8
TP Server (MCU)
IMS Core 7
I-SBC
HD Video Conferencing
Platform
I-SBC
(Non-IMS) TP Platform
SBC
(w/SIP Interworking
for video calls) 6 2
W2S/API Access
SBC
(w/SIP Interworking
for video calls) 5
SBC 1
A-SBC/BGF
Signaling
Media
Content Sharing
Video Conf Client
Interoperability between HD Conferencing Platform and Tele-Presence (TP) Platform is supported by interworking SBC , MRF/MCU and BFCP/H.239 functions
1)-6) A video Conferencing endpoint dials the Conference Bridge number using SIP URI/ E.164 number thru SBC function. Similarly the TP endpoints call the TP Conferencing server.
7) Both Conferencing platforms support dial out capability to bridge the conferences. In this example, the TP dials out to the HD Conferencing Platform. The call is set up between the two Service Providers’ endpoints
Two-way Audio & Video streams are bridged thru the TP MCU over Interworking-SBC. Both SBCs will interwork IMS SIP and SIP.
H.239/SIP BFCP is supported by both platforms for Data Sharing one direction at a time.
P.S: Detail/specific implementation would be determined by Operator’s Service Design.
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18. Back-up

19. Any-to Any Video Capabilities – Fully Integrated and Interoperable
Item Num.
From Service
From
End Points
To Service To
Interop
Enabler Functions
User Experience
/Comments
IR.94 Video Calling
IR.94
(LTE Carrier s w/IR.94)
LTE Carriers with RCS IR.94
Interconnect SBC
Interworking SBC
RCS/IR.94 Video Clients -to-Any Endpoints
Tele-Conferencing Service/Tele Presence Service/UC Voice/SIP Based Video Services
WebRTC
TP end points (TP room, IR.94, Cisco Jabber)
UC Clients/SIP end points
WebRTC Platform
Web End points for Web Streaming
API GW
Web2SIP
3rd Party Video/Web Streaming Services (Web Based Content)
WebRTC Browser Endpoints
Web Streaming End points
W2S
Enterprise UC/OTT
Enterprise UC/OTT with Proprietary clients
Web end points (UGC)
DBF
Adapters Protocol Conversion
MCU/MRF
Data Support Protocols