IMTC Connect 2015 SIP Parity Activity Group Update

1. SIP Parity Activity Group Update
1
Charles Eckel (eckelcu@cisco.com)
IMTC SIP Parity AG Chair
IMTC Connect 2015: SIP Parity AG Update

2. What is the IMTC?
• International Multimedia
Telecommunications Consortium
• Mission:
Promote and facilitate the development and use of
interoperable, real-time, multimedia
telecommunications products and services based on
open international standards.
2IMTC Connect 2015: SIP Parity AG Update

3. Problem Statement
Standards interpreted differently
Solutions are competitive
Interoperability is hard
3IMTC Connect 2015: SIP Parity AG Update

4. SIP Parity Activity Group
Focus
• Provide video profile for SIP that matches capabilities of H.323
• Enable migration from H.323 to SIP
What We Do
• Provide forum for members to agree on best practices
• Develop and advocate requirements to SDOs
• Organize and participate in interoperability testing events
4IMTC Connect 2015: SIP Parity AG Update

5. Best Practice Documents
• SIP Video Profile
– Add video (H.264) to SIP based audio telephony
• Role Based Video
– Add content sharing to SIP based video conferencing
• SIP Security
– Lead adoption of secure signaling (TLS) and media (SRTP)
5IMTC Connect 2015: SIP Parity AG Update

6. SIP Video Profile
• Asymmetric negotiation
– Bandwidth, Video Coding Complexity
• Bandwidth Indications - Session level vs. media level
• RTP/AVPF profile – SDP offer/answer negotiation
• Flow control - SDP vs. RTCP feedback (TMMBR)
• Intra frame request - SIP INFO vs. RTCP feedback (PLI/FIR)
• H.264 – Recommended set of parameters
6IMTC Connect 2015: SIP Parity AG Update

7. Recent Developments
• IMTC1013 – Published (obsoletes IMTC1012)
– Improves interworking with IMS/3GPP
• IMTC1013bis – Draft
– Addresses interworking issue with RTCP feedback parameters
• Test Cases
– Updated to fix issue with “m-stream” vs. “mstrm”
7IMTC Connect 2015: SIP Parity AG Update
SIP Video Profile

8. Role Based Video Streams
• Video - “main” vs. “presentation”
• RFC 4796 “content” attribute
• Mapping:
– “slides” for H.239 “presentation”
– “alt” for H.239 “live”
– “main” for the main video stream
• BFCP (Binary Floor Control Protocol)
– UDP instead of TCP for transport
8IMTC Connect 2015: SIP Parity AG Update

9. Recent Developments
• IETF BFCPBIS Working Group (Charter)
– draft-ietf-bfcpbis-rfc4582bis in RFC editor’s queue
– draft-ietf-bfcpbis-rfc4583bis in working group last call
• IMTC best practice to be updated per new RFCs
– IMTC Last Call
– Publish as IMTC10xx
9IMTC Connect 2015: SIP Parity AG Update
Role Based Video
Streams

10. SIP Security Profile
10IMTC Connect 2015: SIP Parity AG Update

11. Recent Developments
• IETF draft
– An Opportunistic Approach for Secure Real-time
Transport Protocol (OSRTP), draft-johnston-dispatch-
osrtp
• IMTC best practice to be updated per new RFC
– IMTC Last Call
– Publish as IMTC10xx
11IMTC Connect 2015: SIP Parity AG Update
SIP Security Profile

12. SuperOp! 2015 Enhancements
• WebRTC/SIP Interworking
– Cooperative effort between SIP Parity and
WebRTC
– Based on SIP Video Profile best practice/test
cases
• Lync/SIP Interworking
• Network impairments to facilitate testing of
video resiliency and recovery
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13. SuperOp! 2015
13IMTC Connect 2015: SIP Parity AG Update
SIP Video
Endpoint
Lync
Server
WebRTC
Server
SIP Video
Endpoint
SIP Proxy /
B2BUA /
SBC
SIP MCU
SIP /
WebRTC
Gateway
SIP / Lync
Gateway Lync
Endpoint
WebRTC
Endpoint
SIP Video
Endpoint

14. 1. Network Impairments
– Bandwidth cap only, not good enough
2. RTCP Feedback interoperability issue discovered
– SIP Video Best Practice to be updated to provide
clarifications and guidance
3. SIP Video Test Case “m-stream” vs. “mstrm”
– Best practice already addresses correctly
– Test case fixed to align with best practice
14
Discoveries
IMTC Connect 2015: SIP Parity AG Update

15. SuperOp! 2015 Results
• SIP Video Profile
– 400% increase in number of results reported
– 51% Pass (down from 66% in 2014)
– 2% Fail (same as in 2014)
– 47% Not tested/implemented (up from 31% in 2014)
• Role Based Video
– 400% increase in number of results reported
– 52% Pass (down from 57% in 2014)
– 5 % Fail (up from 4% in 2014)
– 43% Not tested/implemented (up from 38% in 2014)
• SIP Security
– First time recording detailed results
– 38% Pass, 3% Fail, 59% Not tested/implemented
– SRTP media achieved in 61% of test combinations
15IMTC Connect 2015: SIP Parity AG Update

16. 1. IPv6 apps
2. WebRTC/SIP gateway separate from WebApp
in cloud
– Best practice or standard for WebApp to GW
3. UC SDN spec in ONF, interoperability in IMTC
16
New for SuperOp! 2016 ???
IMTC Connect 2015: SIP Parity AG Update

17. Recharter - SIP Interconnect AG
• Provides a forum for IMTC member companies to
cooperate and pool resources on issues and extensions
to SIP based enterprise communication applications.
• With its best practices documents providing a shared
foundation, the group identifies and tackles challenges
and opportunities with interoperability, operation, and
integration of SIP based applications with emerging
communication and networking technologies.
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18. SIP Interconnect AG – What We Do
• Organize interoperability test efforts (both virtual and face-
to-face). This are done in cooperation and coordination
with WebRTC, MANE, SSV, and UC SDN activity groups and
with SIPit
• Provide a forum for members to agree on an overall SIP
profile for communication applications, particularly where
it involves interconnecting with other application and
network technologies (e.g. WebRTC, SDN, IPv6)
• Educate members on recent developments in SIP standards
and market evolution
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19. 1. Review, improve, and publish best practices
2. Participate in SuperOp! 2016
3. Champion new work items to address current
needs
19
Call to Action
IMTC Connect 2015: SIP Parity AG Update

20. Questions
20IMTC Connect 2015: SIP Parity AG Update