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    All Types GPRS Call Flow

    Uploaded by

    Chandan Kumar
    The document contains diagrams and descriptions of various components and processes in a GPRS/mobile network. It includes call flows for basic connectivity, MMS messaging, web browsing, and roaming between networks. It also outlines the architecture for a GboIP network and charging/CDR flows.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd

    All Types GPRS Call Flow

    Uploaded by

    Chandan Kumar
    418 views17 pages
    The document contains diagrams and descriptions of various components and processes in a GPRS/mobile network. It includes call flows for basic connectivity, MMS messaging, web browsing, and roaming between networks. It also outlines the architecture for a GboIP network and charging/CDR flows.

    Original Description:

    GPRS (2.75 G) Call Flows for understanding of GSM Concepts.

    Copyright

    © © All Rights Reserved

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    PPTX, PDF, TXT or read online from Scribd

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    The document contains diagrams and descriptions of various components and processes in a GPRS/mobile network. It includes call flows for basic connectivity, MMS messaging, web browsing, and roaming between networks. It also outlines the architecture for a GboIP network and charging/CDR flows.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    418 views17 pages

    All Types GPRS Call Flow

    Uploaded by

    Chandan Kumar
    The document contains diagrams and descriptions of various components and processes in a GPRS/mobile network. It includes call flows for basic connectivity, MMS messaging, web browsing, and roaming between networks. It also outlines the architecture for a GboIP network and charging/CDR flows.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    of 17
    At a glance
    Powered by AI
    The presentation covers different technical aspects of GPRS and 3G networks including node connectivity, call flows for basic services, roaming scenarios and charging mechanisms.

    The main components involved in a GPRS network include BTS, BSC, SGSN, GGSN, DNS and various interfaces like Gb, Gi, Gn, Gp etc. to connect these nodes and enable data transmission.

    When a user tries to browse a website via GPRS, the request is sent to the SGSN which routes it to the GGSN. The GGSN queries the DNS to get the IP address and forwards the request to the intended server. The response then travels back to the user via the same nodes.

    Call Flow

    1 Presentation title in footer


    Department on title master

    Confidentiality level on title master


    Version number on title master

    14 November 2014

    GPRS Node Connectivity


    GPRS - Packet Domain
    Other PLMN

    Gp

    BGw
    Gn

    SGSN

    Gb
    BSS
    BTS
    BTS
    BTS

    (GRX)

    Gp
    Gi
    GGSN

    Gi

    Gr

    Gs

    Gd

    Gf

    PCU
    BSC

    AuC

    EIR

    SMSC

    Internet
    Corporate
    Intranet
    Gc

    HLR

    BSC

    Um

    MSC

    GMSC

    VLR

    MS
    2 Presentation title in footer
    Department on title master

    Confidentiality level on title master


    Version number on title master

    14 November 2014

    ISDN
    PSTN

    Basic Call Flow


    HLR

    GGSN

    BSC

    Internet
    FIREWALL

    SGSN

    IP Allocated to
    Handset
    Eg 203.88.12.10

    3 Presentation title in footer


    Department on title master

    IE DNS

    Gi DNS

    Confidentiality level on title master


    Version number on title master

    14 November 2014

    Vodafone APNs
    Product

    APN Name

    Services

    Vodafone Live

    portalnmms

    WAP/Vodafone Live and MMS

    Vodafone Mobile Connect

    www

    Laptop access/Vodafone mail Enterprise

    VodafoneMail Ind

    mail.vodafone.in

    Vodafone mail Individual / Laptop access

    Blackberry

    Blackberry.net

    Blackberry services (Enterprise / Prosumer)

    iPhone

    iphone

    For iPhone devices

    Vodafone VPN

    vpn.vodafone.in

    Same as WWW APN, additionally


    required for configuring VPN client

    > APN : Access Point Name

    4 Presentation title in footer


    Department on title master

    Confidentiality level on title master


    Version number on title master

    14 November 2014

    Vodafone Live Portal - WAP(WML) Browsing


    Gi DNS

    BSC

    SGSN

    FIREWALL
    Internet
    Access to Internet via
    WAP Gateway

    9
    10

    portalnmms

    APN = portalnmms
    GPRS
    User

    Gateway IP Address = 10.10.1.100


    URL = http://live.vodafone.in

    8
    WAPGw
    Vodafone
    Live Portal

    1-3) URL Send (Payload)

    4-5) GGSN routes the Payload to WAP G/W via Firewall ( Routed using G/w IP Address)
    6-7)WAP G/w resolves the URL name using DNS and forwards the Payload to Portal
    8-10) Content of the Vodafone Live Portal is downloaded to User
    5 Presentation title in footer
    Department on title master

    Confidentiality level on title master


    Version number on title master

    14 November 2014

    Vodafone Mobile Connect - Web (HTML) Browsing


    DNS
    BSC

    SGSN

    GGSN

    FIREWALL

    6
    Internet

    Access to Internet
    1

    7
    8

    www.yahoo.co.in

    GPRS
    User

    APN = www
    1-3) URL Send (Payload)
    4-5) GGSN routes the URL to DNS via Firewall to resolve IP
    6)Payload request is forwarded to Yahoo server
    7-8) Content of the yahoo web site is downloaded to User

    6 Presentation title in footer


    Department on title master

    Confidentiality level on title master


    Version number on title master

    14 November 2014

    MMS Submission
    BSC

    SGSN

    GGSN

    FIREWALL

    WAP G/w

    MMSC

    SMSC

    9
    SMS notification
    10

    1
    6

    SMS
    8

    Gi DNS
    APN = portalnmms
    GPRS

    Gateway IP Address = 10.10.1.100

    User A

    Message Server = http://mms1.live.vodafone.in/mms/

    Message
    storage

    1-3) MMS Send (Payload)


    4-5) GGSN routes the Payload to WAP G/W via Firewall ( Routed using G/w IP Address)
    6-7)WAP G/w resolves the MMSC name using DNS and forwards the Payload to MMSC

    8) MMS stores the Payload (MMS Message )


    9-10) SMS notification is sent to the User B
    7 Presentation title in footer
    Department on title master

    Confidentiality level on title master


    Version number on title master

    14 November 2014

    GPRS
    User B

    MMS Delivery
    BSC

    SGSN

    GGSN

    WAP G/w

    FIREWALL
    5

    MMSC

    SMSC

    9
    Delivery
    notification

    8
    10
    1
    2
    portalnmms
    Gi DNS
    APN = portalnmms
    GPRS
    User B

    Gateway IP Address = 10.10.1.100

    Message
    storage

    Message Server = http://mms1.live.vodafone.in/mms/

    1) MMS Retrieve (Payload)


    2-3) MMSC retrieves the content from storage and forwards to WAPGw
    6-7)WAP G/w forwards the request to GGSN through Gi firewall
    6-8) User A retrieves the Payload (MMS Message )
    9-10) SMS Delivery report is sent to the User A (if requested)
    8 Presentation title in footer
    Department on title master

    Confidentiality level on title master


    Version number on title master

    14 November 2014

    GPRS
    User A

    Blackberry
    Blackberry NOC

    Wireless Network

    Registration Server
    Leased Line
    2x4 Mbps

    BSC

    Handheld

    SGSN

    GGSN

    Router

    Router

    APN= blackberry.net

    Enterprise Network

    Internet

    Blackberry
    Enterprise server

    Firewall

    Outbound
    SRP
    port 3101

    Mail Server
    Exchange/Lotus

    9 Presentation title in footer


    Department on title master

    Confidentiality level on title master


    Version number on title master

    Relay Server
    Listens for
    SRP Connections
    on port 3101

    14 November 2014

    Relay Server

    Roaming Senario

    10 Presentation title in footer


    Department on title master

    Confidentiality level on title master


    Version number on title master

    14 November 2014

    Call Flow - In roamer


    STP/GMSC

    SRS Server

    Gn backbone IP
    203.88.2.0/23
    203.88.4.0/23
    AS number - 64721

    HLR

    Internet
    (Operator)

    BSC

    SGSN

    Site Router

    Gp Firewall
    Operator
    GGSN

    IE DNS

    E DNS
    GRX Router

    Local SGSN GT converted to Mumbai GT


    Non Recursive Query for DNS
    SGSN Source Destination port 33824 to
    40932

    11 Presentation title in footer


    Department on title master

    Belgacom /
    Aicent Router
    Belgacom /
    Aicent DNS

    Confidentiality level on title master


    Version number on title master

    Operators EDNS

    14 November 2014

    Call Flow - Out roamer


    STP/GMSC

    SRS Server

    HLR

    Internet
    (Vodafone)

    BSC
    Belgacom /
    Aicent Router

    SGSN

    Operators
    Router
    Vodafone
    GGSN

    IE DNS
    (Operator)

    E DNS
    (Operator)

    GRX Router

    Operator's
    forwarded DNS
    12 Presentation title in footer
    Department on title master

    Confidentiality level on title master


    Version number on title master

    Vodafone EDNS Gp Firewall

    14 November 2014

    Charging Flow

    13 Presentation title in footer


    Department on title master

    Confidentiality level on title master


    Version number on title master

    14 November 2014

    CDR Flow
    Bangalore
    EMM

    GGSN

    Prepaid / Postpaid IMSI


    separation for Circle

    Mumbai
    EMM

    Filter bases on
    Region

    Delhi
    EMM

    Mumbai
    EMM

    14 Presentation title in footer


    Department on title master

    Postpaid Pune

    Kolkata
    EMM

    Bangalore
    EMM

    Confidentiality level on title master


    Version number on title master

    Prepaid IN
    system (Blr)

    If the circle doenot have IMSI


    separation Pre & Post CDR will be
    forwarded to both systems

    14 November 2014

    GboIP Architecture

    15 Presentation title in footer


    Department on title master

    Confidentiality level on title master


    Version number on title master

    14 November 2014

    GboIP Architecture

    SGSN location
    Huawei
    Switch

    MPBN
    Extreme SW 1

    RedBack
    Router1

    Primary

    BSC 1
    (VLAN 1)

    IBGP

    BSC 10
    (VLAN 10)

    SGSN

    Secondary
    BSC 40
    (VLAN 40)

    GORS core
    switches at
    GPRS room at
    Ground floor

    EBGP with
    Redback1

    Transmission
    Media &
    Equipment

    EBGP with
    Redback-2

    MPBN
    Extreme SW 2

    Redback
    Router2

    BSC 50
    (VLAN 50)

    aggregate L3 switch
    Uplink to GPRS Core Switches for
    SGSN connectivity

    16 Presentation title in footer


    Department on title master

    Confidentiality level on title master


    Version number on title master

    14 November 2014

    Thank you

    17 Presentation title in footer


    Department on title master

    Confidentiality level on title master


    Version number on title master

    14 November 2014

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