Media and ISUP Signaling Transition for IMS and Next-Gen Networks James Rafferty, Cantata Technology

Slides:



Advertisements
Similar presentations
Mobile Switching Systems Unit, L M Ericsson in Finland
Advertisements

Next Generation Emergency Services Christian Militeau Intrado,Inc. March 21, 2006.
SIP & SS7 (SIP-02) Monday - 09/10/07, 10:00-10:45am.
NGN -The Fixed and Mobile Convergence Story Eric Sun Director of Product Marketing ZTE Europe Padova, 30th, June 2005.
GMI 2006 Carrier-Driven Interoperability February 2006.
Cellular COMMUNICATIONS
Voice over IP Fundamentals
24/08/2005 IP Telephony1 Guided by: Presented by: Dr.S.K.Ghosh Nitesh Jain 05IT6008 M.Tech 1 st year.
All rights reserved © 2006, Alcatel Benefits of Distributed Access Border Gateway in the Access  Benoît De Vos Alcatel, May 29 th 2006.
IP Multimedia Subsystem (IMS) James Rafferty, Cantata Technology August 10, 2006.
IP Multimedia Subsystem (IMS) 江培文. Agenda Background IMS Definition IMS Architecture IMS Entities IMS-CS Interworking.
SBC in NGN Architectures Jonathan Cumming. Copyright © 2006 Data Connection Limited All Rights Reserved.2 SBC in NGN Architectures NGN Standardisation.
IMS Workshop- Summary James Rafferty August
Proprietary and Confidential Culture Clash— IMS vs. Peer-to-Peer TMIA 2006 Annual Meeting February 28, 2006 James Rafferty Sr Product Manager
SIP and the application of SIP as used in 3GPP Keith Drage - Lucent Technologies.
Fixed Mobile Convergence T Research Seminar on Telecommunications Business Johanna Heinonen.
Peering Architecture IETF-63 VoIP Peering BOF Sohel Khan, Sprint, TR&D August 4, 2005 Copyright © Sprint All rights reserved.
Overview Of NGN & IP TAX.
All IP Network Architecture 2001 년 12 월 5 일 통신공학연구실 석사 4 차 유성균
Building Applications Using SIP Scott Hoffpauir Vice President, Engineering Fall 1999 VON, Atlanta.
 3G is the third generation of tele standards and technology for mobile networking, superseding 2.5G. It is based on the International Telecommunication.
E J B J A V A X M L C O R B A M P L S D i f f S e r v I P V P N Q o S I P v 6 G P R S U M T S An Analysis.
Colombo, Sri Lanka, 7-10 April 2009 Multimedia Service Delivery on Next Generation Networks Pradeep De Almeida, Group Chief Technology Officer Dialog Telekom.
© 2009 AudioCodes Ltd. All rights reserved. AudioCodes CPE Carrier Applications.
6. Next Generation Networks A. Transition to NGN B
Is VoIP Dead? Where Does it Stand? James Rafferty Product Line Director, Dialogic September 3, 2009.
1 Leveraging SS7 to Deliver IP Services Carl Bergstrom Director – IN & IP Services VeriSign Telecommunication Services Internet Telephony Conference, February.
PART 2: Product Line. Tenor Switches & Gateways Tenor AX Series Solution For Medium to Large Enterprises  Available in 8, 16, 24 and 48 port Available.
Signaling & Network Control Dr. Eng. Amr T. Abdel-Hamid NETW 704 Winter 2006 Intelligent Networks.
CHAPTER 14 PSTN and VoIP Interworking. Cisco Packet Telephony: Connection Control Call Control Services.
Introduction to IMS (IMS-01) IP Media Servers in IMS: MRF and MRFP Garland Sharratt VP Partner Development & Chief Architect Carrier.
IP Solution Architectures for Deploying Video Services (SP-08) IP Media Servers for Multimedia Garland Sharratt VP Partner Development & Chief Architect.
04/06/ Applications on Wireless Platform Ulpiano Conde González.
IEEE NJ Coast Section IP Multi-media core network Subsystem (IMS): Enabler of Next Generation Services Amit Mukhopadhyay & Carlos Urrutia-Valdés.
January 23-26, 2007 Ft. Lauderdale, Florida Host media processing – revisited Faye McClenahan – Aculab.
June 2006 Roles of Session Border Controllers in IMS Networks CANTO - June 2006.
Peering & Routing Designs Using Session Controllers & Media Gateways James Rafferty Voice Peering Forum March 8, 2007.
MGCP Megaco H.248 by Bob Young. MGCP - Megaco - H.248 "It's all one."
Session border controllers
Applied Communications Technology Voice Over IP (VOIP) nas1, April 2012 How does VOIP work? Why are we interested? What components does it have? What standards.
Quintum Confidential and Proprietary 1 Quintum Technologies, Inc. Session Border Controller and VoIP Devices Behind Firewalls Tim Thornton, CTO.
SIP & SS7 James Rafferty, Cantata Technology September 10-12, 2007 Los Angeles Convention Center Los Angeles, California 3 Agenda Overview.
IP Multimedia Subsystems By Vamsee K Pemmaraju. Agenda IMS Example IMS Example Overview Overview Basic Principles Basic Principles Architecture Architecture.
Sridhar Ramachandran Chief Technology Officer Core Session Controller.
Greg Pisano Director, Market Development Brooktrout Technology.
Evolution towards the Next Generation Network
1 Presentation_ID © 1999, Cisco Systems, Inc. Cisco All-IP Mobile Wireless Network Reference Model Presentation_ID.
Voice over IP by Rahul varikuti course instructor: Vicky Hsu.
Strategies towards Telecommunications Convergence Ray Adensamer Senior Manager, Product Marketing RadiSys Session IMS-12: Intro to Fixed Mobile Convergence.
1 Presentation_ID © 1999, Cisco Systems, Inc. Cisco All-IP Mobile Wireless Network Reference Model Presentation_ID.
Telecom in Transition Global Telecommunications is in a time of dramatic transition –Traditional telephone service was just about voice –We now live in.
Intelligent Interconnects in the VoIP Peering Environment
IMS and ATCA James Rafferty
TBE 2710 Chapter 12 Signaling.
PTCL Training & Development
Proprietary and Confidential. Property of Cantata Technology, Inc. 1.
KT VoLTE status and commercial interconnected
To Rent or Buy the IP PBX? Maybe it’s Both…. Building a VoIP Solution That Enables Both.
IMS developments in 3GPP
© 2007 Level 3 Communications, LLC. All Rights Reserved. 1 Beyond SIP Trunking What’s Next ? September 11, 2007 Michael Remacle.
S Postgraduate Course in Radio Communications. Interoperability between 3G and WLAN using IMS Antti Keurulainen,
Improving Enterprise Service Solutions with IMS Architectures Ray Adensamer Senior Manager, Product Marketing RadiSys Session IMS-03: IMS in the Enterprise.
SIP & How It Relates To YOUR Business. Jeff S. Olson Director of Marco Carrier Services David Bailey-Aldrich Technology.
INTERNET PROTOCOL TELEVISION (IP-TV)
VoIP ALLPPT.com _ Free PowerPoint Templates, Diagrams and Charts.
IP Telephony (VoIP).
Ensuring the Readiness of Next Gen Multimedia Applications & Services
INTERNET PROTOCOL TELEVISION (IP-TV)
WIRELESS CORE NETWORK EVOLUTION
Agenda Overview Extending the Reach of VoIP Application Examples Standards and Other Resources Summary.
Presentation transcript:

Media and ISUP Signaling Transition for IMS and Next-Gen Networks James Rafferty, Cantata Technology

3 Agenda Introduction: Networks in Transition Needs for Translation –Signaling –Media How Does it Work Now? How will it Work in the IMS? The Way Forward Summary

4 Introduction: Networks in Transition IP has excellent momentum in both carriers and enterprises Voice and other services will run over IP in the future The transition is underway… –But it will take many years SIP has won the IP standards war –But it needs to interwork with the current networks –Traditional circuit based signaling is still prevalent for both landline and wireless networks IP Multimedia Subsystem has won mind share as a next-gen service architecture –But implementations are still at the trial stage

5 Network Evolution for Service Delivery NetworkTraditional TDM Transition Hybrid Next-Gen IP Architecture Centralized Integrated Design Open & distributed TDM-IP Migration Open & distributed Pure IP (IMS) Signaling/Functions SS7, ISDN, CASSS7-SIP ISDN-SIP CAS-SIP SIP-SIP H.323-SIP Media/Functions TDM – TDM “circuit to circuit” TDM - IP conversion “circuit to packet” IP - IP “packet to packet” Applications TDM enhanced services Discrete applications IP-based transport SS7 services over IP IP services over TDM IP-enable/extend TDM services Multimedia services on common service platform (IMS) Blended SIP services

6 Needs for Translation Signaling: SIP is likely to be the protocol of choice for next generation IP communications It will need to interwork with other signaling methods –Circuit: SS7 network overlays for Intelligent Network services –ISDN User Part (ISUP) for call control –TCAP for Database Services like Caller ID ISDN PRI Channel Associated Signaling (tonal) –IP H.323 was rolled out starting in 1998 –Still found in many carriers and enterprises MGCP is the gateway protocol of choice for Cable networks H.248 is used for gateway control in the IP Multimedia Subsystem

7 Needs for Translation (2) Media: Next generation IP architectures envision end-to-end trancoding-free voice operations –This is the ideal / Reality is messier Why? –Most common VoIP voice codecs: G.711, G.729A, G –Up and coming iLBC –Most common Wireless codecs: CDMA, GSM-FR, GSM-EFR, AMR –Fax Both T.38 and G.711 IP coding are common Result: –Need to translate media across network boundaries

8 Needs for Translation (3) Situation is not much better for video H.324-3G translates media between IP and first gen 3G phones –Special gateways needed to multiplex the media for transmission to the handset A variety of different video codecs in use –H.263 (2000), H –MPEG-4 Advanced Simple Profile –H.264 (aka MPEG-4 Advanced Video Coding) –And more are being produced all the time…

9 How Does it Work Now? VoIP relies strongly on a variety of network elements –Media Gateways Translate media and typically some signaling –Signaling Gateways Usually translate from circuit signaling to IP signaling –Session Border Controllers May translate between IP signaling protocols –For example, H.323 to SIP –Softswitches Provide control over media and signaling gateways in a distributed architecture Sometimes these elements are combined –For example, media + signaling -> Integrated Media Gateway

10 Typical VoIP Architecture IMG 1010 Media Gateway SS7 ISDN / CAS IP Network Class 5 Switch SIP / H.323 SS7 ISDN / CAS IMG 1010 Media Gateway End Users Class 5 Switch Media Gateway Functions: PSTN-to-IP Connection >Media >Signaling >Routing Media Gateway Functions: PSTN-to-IP Connection >Media >Signaling >Routing

11 VoIP Using Softswitch Architecture Softswitch SS7 IP Network SIP - T SS7 End User End Users Class 5 Switch TDM / IMT Media GW Signaling GW Media GW H.248 / MGCP SS7 / M3UA IP Network TDM / IMT RTP Softswitch Media Gateway Functions: PSTN-to-IP Connection >Media Media Gateway Functions: PSTN-to-IP Connection >Media Signaling GW Functions: TDM-to-IP connection >SS7 to SS7 over SIGTRAN Signaling GW Functions: TDM-to-IP connection >SS7 to SS7 over SIGTRAN

12 Voice over Broadband IP Backbone IP Phone SIP RTP SIP RTP TDM Phone Telco Class 5 Switch Media Gateway Functions: PSTN-to-IP Connection >Media >Signaling >Routing Media Gateway Functions: PSTN-to-IP Connection >Media >Signaling >Routing

13 VoIP Peering IMG 1010 Media Gateway TDM Carrier SS7+TDM ISDN / CAS IP Carrier 1 Media Gateway Functions: PSTN-to-IP Connection >Media >Signaling >Routing IP to IP Connection >Transcoding > ENUM address translation Media Gateway Functions: PSTN-to-IP Connection >Media >Signaling >Routing IP to IP Connection >Transcoding > ENUM address translation IP Carrier 2 Session Border Controller SIP / H.323 SIP SBC Functions: IP-to-IP connection >Firewall and NAT traversal >Policy enforcement >Security >Signaling Interwork (SIP, H.323) SBC Functions: IP-to-IP connection >Firewall and NAT traversal >Policy enforcement >Security >Signaling Interwork (SIP, H.323) Peering Fabric offers simpler connections among carriers SIP / H.323 RTP SIP Peering Fabric

14 What’s Next: IMS Wireless Vendors worked to produce standards for Multimedia Services over SIP Design Criteria: –Provide common architecture for multiple services –IP at the core –Offer access to users on existing networks –Need to interwork between IP and circuit switched at the edges Result: IP Multimedia Subsytem (IMS) –Developed by Third Generation Partnership Project (3GPP) –Endorsed by both wireless and wireline industry groups

15 IMS Architecture

16 IMS for the Rest of US  AS – Application Server  SCIM - Service Capability Interaction Manager  MRFC - Multimedia Resource Function Controller  MRFP - Multimedia Resource Function Processor  MRF – Media Resource Function  CSCF- Call Session Control Function  BGCF - Breakout Gateway Control Function  MGCF - Media Gateway Control Function  MGW - Media Gateway  HSS - Home Subscription Server  HLR - Home Location Register Key Elements: HSS/HLR MRFC MRFP CSCF MGW SCIM S-CSCF I-CSCFP-CSCF BGCF MGCF MRF SIP RTP Application Servers

17 IMS and Signaling Translation All signaling converted from circuit to IP at the edges –Integrated Approach: Convert SS7 ISUP, PRI, CAS directly to SIP –Follows TS which is based on ITU-T Q –Distributed Approach Signaling GW: Convert SS7 ISUP and PRI to run over IP –Use the SIGTRAN suite of adaption layers that run over SCTP »For example, ISUP runs over M3UA Media Gateway Control Function –Terminates SS7 over IP and converts to SIP

18 IMS and Media Translation Ideally, media is NOT converted from end to end –For example, use AMR codec for voice over entire 3G UTMS network from end to end Conversions needed to connect to existing networks –Media Gateways Landline Connection - Will convert G.711 to AMR or EVRC 2G to 3G Wireless– Will convert GSM series to AMR Voice over Broadband to Wireless IP –May need conversions such as G.729A, iLBC, or G to AMR or EVRC

19 State of the Standards SIP is a many splendored thing… –Core 3261 specification and many, many others Hitchhiker’s Guide to SIP outlines the “Core SIP” (draft) IMS is standardized on SIP, But: –Several different versions, each offering its own profile of SIP and other related specifications Release 5: First real specs for IMS in 2003; introduces the architecture Release 6: More complete IMS specs in late 2004, but still incomplete Release 7: Just being standardized now; Rollout probably 2 years away –More complete, but some areas are very immature »For example, no standard for media control between application servers and Media Resource Functions

20 State of the Marketplace VoIP Rollout is not waiting for IMS SIP has overtaken H.323 for new VoIP deployments –SIP enabled Media Gateways very popular –H.323 mainly needed to tie into legacy deployments Distributed Gateway model –Many of the large gateways use the distributed approach Media Gateway controlled by Softswitch Softswitch Protocols of choice are MGCP and H.248 Usually have separate signaling gateways to terminate SS7 and convert to IP signaling Integrated Media Gateway Model –Incorporate both signaling and media translation in GW –Include SS7 termination and conversion to SIP or SIP-T in one box for better economics

21 The Way Forward IMS will continue to mature and is well regarded by Tier 1 carriers –Pressures on Landline vendors such as BT will be the early IMS implementors –Wireless vendors have less incentive to make the investment except for new applications Voice over Cable vendors start transition to IMS as well, but currently using SIP and MGCP Tier 2 and below vendors will continue to use SIP and only convert to IMS if obvious advantages Peer to Peer models will also compete with the IMS Client – Server approach –Skype is the 1 st big success story –SIP PTP is being standardized Slow transition from hybrid to all-IP networks

22 Resources Internet Engineering Task Force: –Provides RFCs for SIP, RTP and some aspects of SS7 / IP interworking –Hitchhiker’s Guide to SIP: guide-02.txthttp:// guide-02.txt International Telecommunications Union: –Develops H.248 / Megaco and SS7 series of recommendations Third Generation Partnership Program (3GPP): –Develops IP Multimedia Subsystem and related standards Cablelabs: –Develops standards for Cable use of IMS and MGCP

23 Summary Transition underway from Circuit to IP communications networks SIP is the IP Communications protocol of choice Both Signaling and Media Conversion needed today and for years to come IMS has good mind share, but still at early stage of deployments In the meantime, a variety of network elements will fuel the transition to IP Both distributed and integrated models popular methods for signaling and media translation

24 Thank You!