Roaming VAS (optimal routing)
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1) Optimal routing (OR) is a value-added service that allows calls between roaming subscribers within the same country to be directly routed between serving networks, avoiding international call legs and saving costs. 2) OR requires maintaining a real-time database of inbound roamers including location, serving network, and other data extracted from signaling messages. 3) Typical OR implementations route calls to a special platform housing the roamer database, which analyzes the destination and routes internally or obtains a local number from the destination network.
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in these slides you will learn what is roaming and how it is work in simple way also with some signaling to show how the operators work together and how call & SMS routed , billing ,agreement ,
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Global System for Mobile (GSM) is a second generation cellular standard developed for voice services and data delivery using digital modulation. It has a network subsystem including components like the MSC, HLR, VLR, and AuC that handle call processing and subscriber information. The radio subsystem consists of BSCs controlling multiple BTSs to manage radio network access. GSM provides international roaming, high quality voice calls, and supports data services like SMS and fax in addition to voice.
GSM.pptx-MorelaHTENG.pptx
GSM (Global System for Mobile communications) is a digital cellular technology used for transmitting mobile voice and data services. It operates by dividing each 200KHz channel into eight 25KHz time slots and uses TDMA (Time Division Multiple Access) to transmit signals. The key components of a GSM network are the mobile station (MS), base station subsystem (BSS) comprising base transceiver stations (BTS) and base station controllers (BSC), and the network switching subsystem (NSS) comprising the mobile switching center (MSC), home location register (HLR), visitor location register (VLR), and authentication center (AUC). GSM enables features like international roaming, low cost infrastructure, and support for
Wireless technologies LTE UMTS GSM - 01.ppt
The document provides an overview of 2G, 2.5G, and 3G mobile network architectures. It discusses key network elements in each generation including MSC, HLR, VLR, SGSN, GGSN. It also covers topics like frequency reuse, cell splitting, sectoring and other techniques to improve network capacity. Short message services architecture and elements like SMSC are explained. Concepts like handoff, Bluetooth and WiFi are also summarized briefly.
HUAWEI MASS & ROAMING TROUBLSHOUTING.pptx
The document discusses key components and configuration of Huawei mobile switching centers (MSCs) in Maroc Telecom's roaming network. It begins with definitions of MSCs and mobile switching systems (MSSs), then provides details on Maroc Telecom's 8 Huawei MSCs and their locations. The document outlines MSC commands, a basic call flow, and procedures for configuring Huawei MSCs in the roaming center network, including called and incoming number analysis rules.
Gsm architecture and signalling techniques
This document provides an overview of Global System for Mobile Communications (GSM) including its key objectives, services offered, network architecture and components, operations, signaling, and other aspects. The main points are:
GSM aims to provide improved spectrum efficiency, international roaming, low-cost devices, high-quality voice calls, and support for new data services. The core network consists of mobile stations, base station subsystems, network switching subsystems, and operation support subsystems. GSM uses TDMA/FDMA to allow multiple users to access the network simultaneously and efficiently. Signaling in GSM networks allows for call establishment, management, and control between different network elements.
GSM Fundamentals
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presentation on gsm architecture and fixed assignment
The document provides an overview of GSM architecture and fixed assignment schemes. It discusses the key elements of GSM architecture including the network switching subsystem, base station subsystem, mobile station, and operations and support system. It then covers three fixed assignment schemes - frequency division multiple access (FDMA), time division multiple access (TDMA), and code division multiple access (CDMA) - and describes how channel access is allocated based on frequency, time, or code under each scheme.
Mobile number portability with IEEE Material
This presentation file contains all the basic information about Mobile Number Portability, its implementation, routing mechanism and its benefits to user and telecom operator.
gsm-pt-130414104636-phpapp02.pdf
Global System for Mobile (GSM) is a second generation cellular standard developed to provide voice and data services using digital modulation. It consists of three main subsystems: the network subsystem which includes elements like the MSC, HLR, VLR, and AuC to handle calls and mobility; the radio subsystem including the BSC and BTS to manage radio resources; and the operation and maintenance subsystem for network monitoring and control. GSM uses techniques like channel coding, interleaving, and ciphering to transmit speech signals securely over the radio interface from the mobile station to the base station components.
Gsm architecture and interfaces Telebeans
The GSM system architecture is divided into three major systems: the Switching System (SS), the Base Station System (BSS), and the Operation and Support System (OSS). The SS handles call processing and subscriber functions and includes the MSC, HLR, VLR, and other registers. The BSS handles radio functions and includes the BSC and BTS. The OSS manages errors, configuration, faults, and performance across the network. Key interfaces include the A interface between MSC and BSS, the B interface between MSC and VLR, and the Um interface between MS and BTS.
ppt of gsm network
Global System for Mobile (GSM) is a second generation cellular standard developed to provide voice services and data delivery using digital modulation. It has a network subsystem, radio subsystem, and operation and maintenance subsystem. The network subsystem includes the MSC, HLR, VLR, AuC and EIR which perform call processing and subscriber functions. The radio subsystem consists of the BSC and BTS and manages the radio network. GSM supports teleservices, data services and supplementary services and its architecture allows for cellular communication and roaming between networks.
2mobile number portability
Mobile number portability allows subscribers to retain their phone number when switching mobile service providers. It increases competition by removing the barrier of needing to change phone numbers. Implementing mobile number portability presents challenges for service providers, including high costs of upgrading systems, risk of losing customers to competitors, and complex coordination between providers to route calls to ported numbers. The process involves a central database maintained by a neutral third party that stores ported numbers and routing information to direct calls to the new provider.
SS7: Locate. Track. Manipulate.
Presented by Tobias Engel <tobias@ccc.de>
Available to download from: https://berlin.ccc.de/~tobias/31c3-ss7-locate-track-manipulate.pdf
Shared with permission
2 gsm network structure
The document provides an overview of the architecture and components of a GSM network. It discusses the key subsystems including:
1) The Mobile Station (MS) which includes the Mobile Equipment (ME) and Subscriber Identity Module (SIM) card. The SIM card stores subscriber identity and authentication information.
2) The Base Station Subsystem (BSS) which comprises the Base Transceiver Station (BTS) that provides radio coverage, and the Base Station Controller (BSC) that manages several BTSs.
3) The Network Switching Subsystem (NSS) which includes critical components like the Mobile Switching Center (MSC), Home Location Register (HLR), Visitor Location Register (
Similar to Roaming VAS (optimal routing) (20)
presentation on gsm architecture and fixed assignment
presentation on gsm architecture and fixed assignment
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Roaming VAS (optimal routing)
- 1. Roaming Value-Added Services BY:Rawand Dlshad Jaf IREG Engineer
- 2. Roaming in GSM Network International roaming offers a great opportunity for wireless service providers to improve revenues and generate more profits. They are continuously exploring new ways to attract more roamers to their networks. As you know the roamer set the hand to network register automatically according to the Signal Strength, Reselection may be happens when the roamer moves and the Roamer don't have the loyally to any network out side home country. But the question is how we can attract the roamer to manually network selection The Ans .”by Cost of usage, Service , Discount,…ECT” And VAS
- 3. Optimal Routing What happens when Roamer calling another Roamer in the same Country? MSC/VLR HLR MSC/VLR 1-Dial B 2-Call route to home network MSC/VLR 3 6 3-Sending routin Info 6-Provide by MSRN. 4-asking MSRN 5-MSRN 8 Call Route to B B A Country X Country B
- 4. Optimal Routing This is surly not an efficient routing because is require tow international call legs , for that we need optimal routing (OR) as value add service to attract & retain Roamers in Visit net. OP allows a call to routed directly from originating MSC to MSC currently serving roamer for that the international call will be avoided saving cost and OP can be applied to following scenarios: 1- Inbound Roamer to Roamer call in same Country and network. 2- Inbound Roamer to Roamer call in same Country but other network. 3-A local Subscriber calling Inbound roamer in same network.
- 5. Implementation • Usually access code is used fallowed by the regular B party international number. • All the OR call are routed to a special Platform which enable the OR, there could be several different ways to implement OR in the network. • The three important requirement for any OR implementation are: 1. Acquire, maintain, and manage the data for all inbound roamers currently in the network in real time. 2. Analysis of the B party number to check if it is an inbound roamer currently in a network implementing OR or in any other PLMN within the same country, where the call could be routed locally. 3. If OR is possible, then acquire MSRN from the serving MSC to route the call locally.
- 6. The key roaming procedures, such as location update, insert subscriber data, authentication, and cancel location messages provide all the critical information to build the database for OR purposes (by extract the signaling messages from the CCS7 links carrying MAP traffic to partner networks). For example, by decod-ing a UL/ISD procedure, the following parameters can be extracted. ■ Subscriber’s IMSI ■ MSISDN ■ HLR address ■ Serving MSC/VLR address ■ Timestamp for first and subsequent UL How can I get a database for OR?
- 7. Typical implementation. (Roamers under Same Operator) Mobile/inbound RoamerMobile/inbound Roamer Fixed lineFixed line OR pattform OR pattform 1-IAM,B party number. 1-IAM,B party number. Roamer data base Roamer data base 2-Get IMSI <VLR/MSC> 2-Get IMSI <VLR/MSC> 3-IMSI, VLR/MSC3-IMSI, VLR/MSC MSCMSC VLRVLR 4-AskthMSRN 4-AskthMSRN 5-ResponseMSRN 5-ResponseMSRN 5-IAM (M SRN ) 5-IAM (M SRN ) B inbound RoamerB inbound Roamer <OR access code><B party international number><OR access code><B party international number>
- 8. Typical implementation. (Roamers in same country but under different Operators) Mobile/inbound RoamerMobile/inbound Roamer OR pattform OR pattform 1-IAM,B party number. 1-IAM,B party number. Roamer data base Roamer data base 2-Get IMSI <VLR/MSC> 2-Get IMSI <VLR/MSC> 3-HLR3-HLR MSCMSC VLRVLR 8-IAM (M SRN) 8-IAM (M SRN ) B inbound RoamerB inbound Roamer Fixed lineFixed line HLRHLR 4-SRI (MSISDN) 4-SRI (MSISDN) 5- Ask MSRN5- Ask MSRN 6- MSRN6- MSRN 7- MSRN 7- MSRN Home networkHome network