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Session Abstract

While WebRTC is powerful and has huge open opportunities on the Internet, most enterprises are just now deploying SIP as a way to normalize and reduce costs in their

communications infrastructure. This session will focus on the challenges and methods of integrating WebRTC into SIP, wither through a vendor solution or the open options

available. It will discuss the relative benefits of direct media interoperation versus using a media server of translation as well as the emerging support from vendors for WebRTC

components like VP8. This session is essential to mapping out your integrations strategy between WebRTC and SIP.

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SIP and WebRTC – Working Together?

Session E3-3 E. Brent Kelly, Ph.D. President and Principal Analyst KelCor, Inc. Vice President and Principal Analyst, Constellation Research bkelly@kelcor.com; brent@constellationr.com twitter: @ebkell

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Speakers

• Nancy Maluso

– VP & GM Application Solutions

– Sonus

• Alan Percy

– Senior Director Marketing, NA

– AudioCodes

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WebRTC Session Management and SIP The Good, The Bad and the Ugly….

Alan Percy

Senior Director, Marketing

AudioCodes

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Why do we care about SIP?

• Service Provider Networks (SIP Trunking)

• Thousands of Existing Applications

– Unified Communications

– Contact Centers

– Conferencing/collaboration

– IP-PBX

– …

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SIP - The Good, Bad and Ugly

• The Good

– Mature, well documented, well understood, flexible

• The Bad

– NAT Traversal Issues, security holes, firewall challenges

• The Ugly

– Interoperability issues persist – flexibility is its weakness

– STUN, TURN…

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Vision

We see developers choosing one of four paths forward

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Pure “Greenfield” Applications

• No legacy interoperability

• Proprietary peer connection

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WebRTC Client WebRTC Application

“Let’s Talk”

“Right-on!”

Media

Gaming Social Media Peer to Peer

“Brownfield” SIP Applications

• With SIP over Web Sockets and SBC

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WebRTC Client SIP Application

Session Border Controller

[INVITE] INVITE

200 OK [200 OK]

Opus G.711

SIP Phones

SIP G.711

Transcode & Encrypt Media

SIP & WebSockets

Contact Centers UC & IP-PBX

WebRTC-enabled SIP Applications

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WebRTC Client WebRTC-enabled

SIP Application

SBC or Media Server

Transcode & Encrypt Media

Opus G.711

“Let’s Talk”

“Right-on!”

SIP Phones

SIP G.711

• Proprietary peer connection

• Media transcoding

WebRTC-enabled SIP Applications and Endpoints

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WebRTC Client WebRTC-enabled

SIP Application

Media Opus Opus

“Let’s Talk”

“Right-on!”

SIP Phones

SIP Opus

• Application supports WebRTC and SIP

• End-points support Opus

Vision Method SIP/WebSockets

Required Transcoding “Vision”

“Greenfield” Applications No No Strong

“Brownfield” SIP Applications Yes Optional Poor

WebRTC-enabled SIP Applications No Optional Medium

WebRTC-enabled SIP Applications and Endpoints

No No Strong

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CONNECTING THE EXISTING ENTERPRISE

Nancy Maluso

VP & GM

Sonus Networks

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WebRTC enabled Browser

Web Server (1)

(HTTP)

(SRTP/DTLS) and STUN Checks

(SIP)

IPPBX/ Telephony Application Server

STUN/ TURN Server (4)

WebRTC Gateway (2)

SBC (3)

Web Services

(HTTP)

SIP (SDP & ICE)

Enterprise Network Architecture

(RTP / UDP)

WebRTC enabled Browser

Web Server (1) (HTTP)

(SRTP/DTLS)

PSTN

(Dial-out only) (RTP)

(SIP)

STUN/ TURN

Server (4)

WebRTC Gateway (2)

SBC (3)

Web Services

Component Roles WebServer (1) WebRTC Gateway (2) SBC (3) ICE: STUN and TURN (4)

Provide HTML and Java Script to the Browser include webRTC code

Receive requests for communications

Secure the network ICE is the “process” that enables NAT (firewall) traversal

Host applications and services

Convert HTTP requests to SIP

Provide interoperability: • Transcode media • Transrate media • Translate protocols • Normalize SIP

STUN: uses discovery to provide public IP address

Communicate to separately hosted applications via RestAPI

Send SIP request to appropriate entity

Implement and enforce network policy (routing rules)

TURN provides port information

Provide SDK May be part of SBC Or attached to PBX or other comm components

May also host applications and services (eg. Recording)

May be part of SBC

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“Packaging”

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IPPBX/ Telephony Application Server WebRTC

Gateway (2)

SBC (3) WebRTC Gateway (2)

STUN/ TURN

Server (4)

WebRTC enabled Browser

Web Server (1)

IPPBX/ Telephony Application Server

STUN/ TURN Server (4)

WebRTC Gateway (2)

SBC (3)

Web Services

Enterprise Network Architecture

(RTP / UDP)

Multiple Back End Systems

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WebRTC enabled Browser

Web Server (1)

SBC (3)

Web Services

Questions

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