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Semelhante a WebRTC vs VoIP: IIT-RTC Oct 2013
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WebRTC vs VoIP: IIT-RTC Oct 2013
- 1. WebRTC vs. VoIP What’s New? What’s Different? reid.stidolph@oracle.com @reidstidolph reidstidolph@gmail.com http://www.linkedin.com/in/reidstidolph
- 2. Overview Level-Set Similarities Technical Differences Architecture Differences Principle Differences Shifts in RTC
- 3. Voice Over Internet Protocol ● “VoIP” a Broad term ● Grown to encompass multimedia, not just voice ● Diverse protocols ○ some well defined standards, some de-facto, some proprietary ● Used in a variety of networks ○ IPv4, IPv6, Public Internet, Private LANs, etc. SI P
- 4. The VoIP Universe IM S UC IP i l e Vo Mob Fixed Line Con sum er s VoIP es Busin VoI P
- 5. Web Real Time Communications ● Plugin-less RTC Media engine in the Browser ● Purpose built for the World Wide Web ● Collaborative W3C and IETF standardization ● RTC as a feature, not necessarily the service or application
- 6. WebRTC Universe 1B devices Supported in 1Q14
- 7. User Experience Legacy 100 Years of Telco Reliable, Secure, Resilient 20 Years of Web Rich, Dynamic, Innovative
- 8. VoIP and WebRTC Similarities ● Transmission of communication data between Users in real-time ● Use RTP, SDP O/A ● G.711 ● Run over IP networks
- 9. Technical Divide Signaling Transport Media Description Undefined SIP XMPP H.323 WebSock BUNDL E DTLS -S Media Transport Network ets R TP ux RTP-M C RT eb W Signaling Protocol VP8(?) H.264 AMR-WB Opus P HTT Vo IP Codecs T CP Traditional SDP MSID TURN Data Channels ICE STUN UDP TLS MSRP UDP IPv4 / IPv6 RTP Unique Tr ansport per Strea m SDES-SRTP
- 13. WebRTC Mobility and Resilience: More Needed Web App has no control over network changes • Rehydration - automatically reestablish handover App App Failure Reconnect App lost sessions • Restore call/session after browser refresh/crash • Network handoff • Device handoff
- 14. Shifts in RTC: Create and Extend RTC Extension, WebRTC enabling existing comms WebRTC as a new edge access network Network evolutions toward NFV, Telco-OTT Security, Interoperability, Reliability App creation toolkits for rapid service creation, prototyping Media scaling, compliance Advance session handling
Notas do Editor
- Intro Compare and contrast WebRTC, and VoIP as it’s deployed today.
- The VoIP universe as it exists today is very diverse and vibrant. VoIP began for many as IP networks began to prevail within the various galaxies In many cases, VoIP was introduced for cost savings replacement to telco VoIP saw fast growth in the early days in the Fixed line and business VoIP space…innovators like asterisk, vonage Some of the more rapid expansion, by telco standards, is taking place in the mobile and UC arena. It’s important to note that the network environments and requirements, the acronyms, the use of protocols…can all be very different
- Begins with a singularity in focus: the Web Rapid expansion Relatively few endpoint types, accessed by JavaScript Single largest install base of an interoperable RTC media stack Rapid expansion like this is bound to cause some disruption
- To understand where someone is going, you can look at where they’ve been To begin to contrast the two, we can first look at what the user interface to the two worlds has been
- These are harder to quantify and characterize Undercurrents like bigger network vs. bigger client highlight this While they are difficult to characterize, they manifest themselves in the technologies that align on one side or the other As the two worlds collide once again, it is helpful to have a pragmatic appreciation for what each does well, and maybe not so well
- Browser crashes, tab closes, or the network changes…what happens?
- That’s a look at just a couple of specific challenges for those looking to bring VoIP/Telco like qualities to WebRTC…and vice-versa. But there are major industry shifts taking place as a result of the gaps between VoIP, and the rapidly expanding WebRTC…things are happening to fill the void. An immediate push for existing, traditional RTC services to extend what they do to the web. This implies heavy requirements for elements with GW functionality SBCs make a good choice as they are already deployed in many RTC architectures to handle things like security and compliance…WebRTC IWF becomes super-set of this VoIP network architecture for a while has been moving toward virtualization, and becoming more web-like…this trend has likely seen acceleration as a result of WebRTC On the web side, deployments will need robust tools and techniques, beyond the scope of a simple GW, or static web server, to handle the advance call scenarios like rehydration and mobility Toolkits, toolkits, toolkits…those wanting rapid service creation and prototyping can do so with minimal investment Web based services could be subject to compliance obligations, forcing them to scale and handle media The tools of WebRTC will likely move outside of the “web” as well
- So that provides on contrast of WebRTC and VoIP as it’s deployed in enterprises and service providers today For you technologists, as these worlds expand, there is sure to be no shortages of unique, fun, technical challenges found where these universes collide and mesh.