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AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu SIP Thor Cost-effective, highly scalable SIP core network by Adrian Georgescu Orange Labs,

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Presentation on theme: "AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu SIP Thor Cost-effective, highly scalable SIP core network by Adrian Georgescu Orange Labs,"— Presentation transcript:

1 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu SIP Thor Cost-effective, highly scalable SIP core network by Adrian Georgescu Orange Labs, San Francisco July 1st, 2010

2 AG Projects SIP Thor SIP infrastructure experts Introduction My name is Adrian Georgescu Founder and CEO of AG Projects My business is the delivery of SIP infrastructure to operators We provide simple solutions for the complex problems of our customers 8 years in the SIP business

3 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu My open source portfolio OpenSIPS – SIP Proxy/Registrar OpenXCAP – Presence Policy Server MediaProxy – RTP media Relay MSRP Relay – IM media relay CDRTool – Mediation and Accounting Blink – State of the art SIP client

4 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu My story today Replacing IMS core with self organizing SIP networks based on P2P How to roll out a cost-effective country level infrastructure Lowering down the operational costs to almost zero

5 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu The danger of 99.9 %

6 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu An American company instructed their new Japanese supplier that the parts they have ordered should conform to US firms exacting quality standards % conformity with specification Confused, but determined to comply, the Japanese firm deliberately shipped one faulty component with every 999 perfect ones. A note accompanied the shipment stating that they were unsure why the customer wanted 0.1 per cent failure but they were happy to oblige. From the book How to Move Minds and Influence People by Iain Carruthers

7 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu Short history of PSTN PSTN is a centralized network where various elements are chained to provide one service: Voice The business model followed a create and manage bottleneck architecture inherited from the way the network was built (incremental) The need for cost effective growth and the possibility of introducing new services brought NGN into the picture

8 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu Motivation for migration to NGN Lower the operational expenditure by converging the data and voice networks into one single network (operational cost reduction) Increase the revenues by introducing new services beyond traditional voice services (roll-out new services)

9 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu The Next Generation Networks (NGN) NGN is a model proposed by ITU-T that aims to implement a a model similar to PSTN by using the Internet protocols Network is application aware Call Control functions reside in the network QoS is a matter of central control (to guarantee the 5 times 9)

10 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu ITU-T NGN architecture Picture provided by Richard Stastny

11 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu IMS, NGN solution for mobile networks IMS initially developed by 3GPP to replace the mobile networks Based on operator controlled, walled-garden Internet Based on the SIP protocol developed within IETF Internet protocols have been chosen for their efficiency while trying to maintain a closed network

12 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu 3GPP IMS architecture Picture contributed by Gonzalo Camarillo

13 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu IMS, NGN solution for fixed networks IMS was designed to implement an all-IP telecommunications environment for the fixed line operators too IMS supported also by ETSI (TISPAN) with its extensions for the fixed line networks (DSL/cable) Based again on an operator controlled, walled-garden Internet

14 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu Other IP Networks IP Transport (Access and Core) T-MGF I-BGF UPSF P-CSCF I/S-CSCF BGCF SLF Charging Functions IWF PSTN Emulation (R2) Mw Mw/Mk/Mm Mr Mg Mj Mi MpMn Gm Gq' ISC Cx Dx Dh Sh Ic Rf/Ro Rf/Ro Ib Iw Gq' PSTN/ISDN SGF MRFC MGCF MRFP e4 Ie Mw IBCF Mk Application Servers Rf/Ro AGCF e2 P1 P2 P3 UE CNG MG IMS / PSTN Simulation Gq' - SPDF A-RACF Resource & Admission Control Resource & Admission Control SPDF Network Attachment Subsystem ReIa RCEF BGF Ut ETSI TISPAN IMS Architecture Picture provided by Richard Stastny

15 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu IMS is clogged with technical problems Follows a classic telephony design with chained components, enforcing resource scarcity End-to-end communication not possible between end-points Innovation possible and allowed only in the network core Complexity. 12 components with 22 interfaces (release 4), +30 interfaces in release 6

16 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu Why is IMS so complex? Decomposing devices into most granular functions and links Tracking and controlling end-user behavior for billing purposes The proliferation of boxes and protocols for the state management required for data tracking leads to cognitive overload but adds little value. Complexity is ugly

17 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu IMS deployment cost is prohibitive Cost of deployment Cost of maintenance, many components, boxes, links Development costs, services deployed only from the core Delivers for a huge cost less than your consumers got from Skype yesterday

18 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu The cost of walled gardens Telecom industry is definitely not known for its innovations Raising barriers cost money and returns nothing back By the time you finish raising up your walled garden, the customers are safely outside All innovation today is taking place on the public Internet

19 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu Internet is simple and simple is beautiful Internet is a simple network Internet services (called applications) are performed at the edge More CPU power on the edge, more applications available Increase of bandwidth eliminates the source of QoS problems Based on the end-to-end principle Picture contributed by unknown lady

20 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu the end-to-end principle of the Internet Network is unaware of the applications, this makes it scalable Nothing should be done in the network that can be done in an end-system Quality of Service (QoS) is a matter of bandwidth availability and not of central control (RTT and packet loss)

21 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu Why do Internet business models flourish? Services are available on the edge, spread virally Internet is an eat all you can model with easy to bill flat-fee models New applications are rolled out faster at the edge Free services attract naturally large amount of users to premium services

22 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu Real-time communications over the Internet 1.SIP - Signaling protocol to setup and terminate sessions 2. ENUM - Translate telephone numbers into SIP addresses 3. Presence - enable applications beyond voice 4. RTP media for audio, video 5. MSRP media for IM and File Transfer

23 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu P2P, scalable Internet applications are built based on it Widely known for file-sharing and IM applications P2P today accounts for more than 50% of the Internet traffic What P2P does, it creates an overlay network for a set of specific applications P2P provides actually a suite of technologies that solves today the problems of IMS

24 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu What is so special about P2P technology? 1. Join/Leave: Nodes may come and go at any time, the network topology reconfigures itself 2. Lookup: The network can locate deterministically the node that serves a specific user or service 3. Routing: The network can route a message regardless of network topology changes and without manual re- configuration

25 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu P2P solves the problem of the IMS, the cost 1.Self-organizing network (automatic disaster recovery) 2.Scalability limited by hardware 3.Cheap hardware resources in place of expensive servers 4.No idle components, all hardware assets are used 5.No need for monitoring, operations, engineering, planned maintenance

26 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu Take necessary functions from IMS Picture contributed by Gonzalo Camarillo

27 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu IMS design drastically optimized Picture contributed by Gonzalo Camarillo

28 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu Isolate the necessary core functions 1.SIP Proxy 2.Media relay 3.DNS/ENUM 4.Voic 5.Presence 6.Profile database 7.Accounting

29 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu Fold all services into a single box A single commodity box today can easily handle 50K SIP subscribers and more than 2000 media sessions.

30 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu Play the hat-trick Build a self-organizing overlay network by using Peer-to-Peer technology and use the IMS-in-a- box as nodes

31 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu Equal peers provide all functions

32 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu From complexity to common sense simplicity

33 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu

34 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu

35 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu SIP Thor technology 1.Follows the same design as MapReduce (Google) and Amazon EC2 (Dynamo) 2.First design that applied P2P on SIP core networks 3.No need for managing the infrastructure (just monitor if available resources > required capacity) 4.Adding a new server = Pizza-delivery, DHL can do it

36 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu SIP Thor deployment status today 1.Development, then trials and bug fixes for 2 years 2.Two commercial deployments today (Cable and Fiber) 3.Free SIP service SIP2SIP.info 4.Reliable enough for a Tier 1 deployment scenario 5.To put it more simply, it works.

37 AG Projects SIP Thor SIP infrastructure experts Adrian Georgescu Contact Information Thank you, You may contact me at:


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