Presentation antrax 30.10.13

• 1. ANTRAXTeaching Presentation, Flames Group SIA

2. Part IWhat is Voice transit? 3. Origination and Termination Processes Scheme Call origination processTransit OperatorsVoice Traffic Termination Operator B Subscriber BSubscriber A Operator ACall termination processThe call termination process is totally different from the call origination process 4. Main types of operatorsNational operatorsLand-line operators Licensed Mobile Operators (CDMA, GSM) Large Transit (VoIP) Operators GSM Terminators Small Transit (VoIP) OperatorsVoIP: subscribers are connected via soft-phones or calling cards Types of inter-operator connections (physical level): copper, optics, Ethernet 5. Transit operators Key occurrence reasonsTechnologicalWe couldn't call to another continent using only a cablePoliticalDifferent countries, each of them have it's own policyCommercialThe government prohibit operators to connect directlyPersonal wealthManagement companies need to earn profit 6. Tarification Main principles Long distance tarificationInternational tarificationDial codeDescriptionPriceValid DateTarification38Ukraine0.15 USD1.1.20001/138 067 38 097 38 096Ukraine Kyivstar0.10 USD1.1.20011/138 050Ukraine MTS0.08 USD1.1.20051/10/1/1 per second0/60/60 per minutetarificationtarification60/60 tarification principle uses only in Mexico 7. Routing Example This is a process of choosing the route for the voice call The process is based on tariff differences and quality of the route Subscriber A Operator ATransit OperatorsOperator B Subscriber B 8. Voice over Internet Protocol HistoryVoIP technology occurred in the early 2000. It was a behavior of the telecommunications industry and the openness and freedom of the Internet that brought this technology to the forefront of communications. And, it will be the economic forces that provide the motivation for companies to develop and use VoIP technology. By 2000, VoIP calls accounted for 3% and by 2003 that number had jumped up to 25% 9. Income distribution Among the telecom operators Cost 0.50 $/min 0.10 $/min0.25 $/min 0.20 $/min0.17 $/min0.15 $/minOperator AOperator B Margin 0.05$/minSubscriber AMargin: 0.25$/min0.00 $/minMargin 0.03$/minMargin 0.02$/minTransit OperatorsMargin 0.05$/minMargin: 0.10$/minSubscriber BTransit operators do not have their own subscriber base 10. Routes quality Main Indicators ACDASRPDDAnswerPostCallSeizureDialingDurationRatioDelayGood ACD = 3 4 minutesDTMFFAXCallingAverageCLIDual-toneShort forLinemulti-facsimileIdentificatfrequency(T.38ionsignalingprotocol)Good PDD is less then 300 msGood ASR = 30 50% 11. Quality of the routes Main definitionsPremium qualityTDM qualityRetail qualityThe route with absolute quality: DTMF, CLI, FAX, reasonable PDDThe route shows high quality:It is pig in a poke.Good ASR, ACD, PDD. CLI might be hiddenAll indicators should be checked twice; CLI, FAX, DTMF optionallyDirect qualityGSM qualityWholesale qualityObviously it is a route from the direct supplierRoute provided through GSMgatewaysLow-quality routes. No CLI, DTMF, FAX options. FAS could be expectedFAS False Answer Supervision 12. Traditional Call SchemeHere we can see call scheme with no FAS 13. FAS False Answer Supervision False Answer/False RingEarly AnswerLate DisconnectFalse answers occur when a carrier deliberately charges a connection period while in reality the call was not connected to the destination. 14. Soft SwitchMost popular among CIS operators are: Mera and Asterisk 15. Soft Switch Billing Operator A SIPOperator B SIP/H.323Protocol converterBilling server Main functions:PSTN GSM networkVirtual Office IP-PBX Operator C H.323Billing Server operates the Soft Switch- Authentication; - Authorization; - Accounting; - Routing; - Statistics; - Billing. 16. Part IIGSM Network Architecture 17. GSM Network Architecture Scheme Base Station Base Station ControllerThe intelligent part of the base station subsystem. Performs radio channels managementCell is the smallest radio coverage area in the network LA Location Area (a group of cells) 18. GSM Network Architecture SchemeHLR Home Location RegisterAuC Authentication CenterVLR - Visitor Location RegisterEIR Equipment Identity RegisterMSC Mobile Switching Center 19. GSM Carrier Frequencies GSM networks use various bandings, or in other words different Wave streghts/lenghts/frequecies to provide their servicesGSM 900, is where the specific mobile carrier uses, 900Mhz as the wave length, or banding for its services. This is one of the lowest of todays commercial communication servicesGSM 1800 networks use a wide range of signals, starting from 800 MHz and then 1700 MHz or else 1800 MHz at a maximumGSM 900/1800 network - it is a single network with a common structure, logic, and monitoring where the phone is not switchingGSM-900 and GSM-1800 are used in most parts of the world: Europe, Middle East, Africa, Australia and most of Asia. In South Americas it is in Costa Rica (GSM-1800), Brazil (GSM-850, 900 and 1800), Guatemala (GSM-850, GSM-900 and 1900), El Salvador (GSM-850, GSM-900 and 1900). 20. GSM Gateway What is it?A VoIP GSM Gateway enables direct routing between IP, digital, analog and GSM networksThrough least cost routing the gateways select the most Cost-effective telephone connectionWith these devices (fixed cellular terminals) companies can significantly reduce the money they spend on telephony, especially the money they spend on calls from IP to GSMThey check the number which is dialed as well as rate information which is stored in an internal routing tableThe core idea behind cost saving with VoIP GSM Gateways is Least Cost Routing (LCR) 21. Gateway Where does the Internet occur? Subscriber ASubscriber BINTERNET Operator B Operator A Copper connectionTransit operator 1GatewayVoIP Transit operatorOptical connectionTransit operator 2 TDM connectionIP connectionTransit operator 3Transit operator 4 Ethernet connectionInternet is most common to appear while call is transmitting between transit operators 22. GSM Gateway Where is it?When using a gateway you can save money due to calls organizing between subscribers without use of fixed-line operators 23. GSM Gateway Examples of use 1. How do call centers use the gateway:Internal subscribersPBX with support of SIP or H.323GatewayGSM subscriber2. How do companies use the gateway:Internal subscriberPBX with support of SIP or H.323VoIP gateway addresses a request to PBX that: Dials GSM number of the subscriber through the gateway; Calls the requested extension number; If both sides answered, GW establish a voice connection.GSM subscriberThere are several types of network, connected with the gateway: GSM and IP (VoIP) networks; PSTN and VoIP networks; PSTN and GSM networks; 24. GSM Gateway ArchitectureGSM Gateways are usually using by offices, call centers and gsm terminators. Usually GSM Gateways are placed to the space with limited human access and in different cells (ex: Data Centers, lofts, etc.) 25. GSM Gateway Net Tariffs Transit operators Subscriber A0.40$/ min0.20$/ minOperator AMargin: 0.05$/minMargin: 0.20$/min0.05$/ minMargin: 0.05$/min0.10$/ minGatewayMargin: 0.05$/minOperator B Margin: 0.05$/min0.15$/ min(with Sim-cards) Margin: 0.10$/minNet tariffs 0.00$/ min 0.00$/ minSubscriber BSubscriber BWhen terminator diverts call to subscriber B and use only operator's B network, he will have a net tariffs 26. Part IIIGSM Network Anti-Fraud 27. Anti-Fraud What's that? If gateway acts not like a human, it becomes a target to the Anti-FraudAnti-Fraud it is a software complex for detecting gateways, based on analyzing subscriber's behavior. 28. Anti-Fraud would not block if: Real Subscriber: - Calls from different locations; - Calls limited number of subscribers (family); - Uses 1 Sim Card; - Send SMSTo fight Anti-Fraud you will need many gateways in a different cells 29. Anti-Fraud Basic principles of work Anti-Fraud can analyze: Lots of outgoing calls in a short period of time to the different numbersAbsence of incoming traffic and no operator's services usageSim-card profile analyzingAuto-pro-ringAnti-Fraud is dangerous for a whole SIM cards series, which was activated from one place in a short time period 30. Anti-Fraud IMSIMCC - mobile country code An IMSI is usually presented as a 15 digit long number, but can be shorter.MNC - mobile network code MSIN - mobile subscription identification numberIMSI - International Mobile Subscriber Identity 31. Anti-Fraud Key blocking methods Sim-card stops to register in GSM networksSim-card is forbidden to make outgoing calls 32. Part IVAnti-AntiFraud 33. Sim-box What's that? It is one of the hardware modules of GSM termination equipment.Functions: 1. To make a Sim-card not plugged into the gateway 2. Possibility to use a lot of Sim-cards 3. Possibility to register a Sim-card on a specific gateway via InternetThe main function of this element is to store the array of Sim-cards, which take part in IPtelephony. 34. Anti Anti-Fraud What for do we need it:We will need a lot of Sim-cards, which could move between the gateways, would make a limited number of calls, receive incoming calls and use operator's services (SMS, Internet) 35. Anti Anti-Fraud Processes ThekeytaskofAntiAntiFraudsystemistohidegatewaysand imitatethatSimcardsareactinglikearealsubscribers.Sim-RotationSim-MigrationSIM cards within each sim-box can be divided into groups, each of these groups can assigned to a Separate GSM-module of VoIP-gateway. Over time, the system is able to make changes within each group, changing sim-card which is responsible for making voice calls from one to anotherCDR Call Detail RecordIf you have several GSM-gateways located in different parts of the city, system will make SIM card to make calls from every gateway by turn, creating an illusion of subscriber movement, thus helping to protect your cards from blocking by the mobile operator 36. Anti Anti-Fraud Anti-SpamAnti-SpamAnalyzing calls, which are going through the soft switchIdentifying numbers, which are making calls, to which numbers they're calling and analyzing calls frequencyHelps to include numbers to black, white or gray lists 37. Part VANTRAX Solution 38. ANTRAX Solution HW and SW Solution for business Our ANTRAX Solution consist of:1. Sub Rack 2. Sim board3. GSM board 4. Sim Server 5. GUI 39. ANTRAX Solution Specification It is a hardware module of Antrax system with 15 universal slots. It acts as a switch on the Ethernet level for GSM and/or Sim -modules This hardware component consist of two GSM modules (we have 2 active channels) This HW component may contain up to 20 Sim-cardsIt is a set of tools (scripts and algorithms) which forms the basis of Anti Anti-Fraud systemGraphical User Interface. Which gives you an ability to control your sims in one click 40. Thank you !