SolutionStudy GSM SIM Server Box Gateway Police by emk4053

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									      Case Study
      For Police




GSM SIM BOX –
SERVER
GSM GATEWAY
                   www.birtel.com.tr
                                Content
•   Overview

•   TOPEX SIM Server Architecture

•   Architecture components

•   TOPEX SIM Server features

•   Alarms and statistics

•   Advantages

•   Redundancy mechanism

•   Power supply autonomy
                                          www.birtel.com.tr
                                       Overview
•   Manages the SIM allocation without the need of human intervention by
    gathering the SIM cards in a central location

•   Virtual allocation of SIM cards – any SIM card stored in the SIM Box may
    be dynamically assigned to any GSM channel of any TOPEX gateway

•   SIM cards organized into logical groups named SIM Pools

•   Mobile modules organized into logical groups named GSM Pools

•   Remote recharging from the web based interface of the prepaid SIM cards

•   The administration and maintenance is achieved from the password
    protected web based interface

•   The information is exchanged via IP connection:
     – Necessary bandwidth 64kbps
     – Roundtrip delay between SIM Server/box and GSM GW should be
         bellow 800ms


                                                                               www.birtel.com.tr
TOPEX SIM Server architecture
              LAN
                                           2G/3G
                                          Networks


  Remote                      4 GSM ch
   OAM
                                           2G/3G
                                          Networks
  TOPEX                       10 GSM ch
SIM Server            IP
                    Network
                                           2G/3G
                              30 GSM ch
                                          Networks
  TOPEX
 SIM Box 1


                              Cellular
                              Gateway
   TOPEX
 SIM Box 10

                                          www.birtel.com.tr
                        Architecture components
•   TOPEX SIM Server – a central device manager which administrate
    several SIM Boxes and GSM Gateways
     – One SIM Server can manage 10 SIM boxes – more than 5000
        SIMs!


•   TOPEX SIM Box – storage device which contains up to 512 SIM cards
    on a single equipment


•   TOPEX VoiBridge – Cellular Gateway – up to 4 GSM / UMTS
    channels – available with FXO, BRI, PRI and VoIP trunks


•   TOPEX Qutex – Cellular Gateway – up to 20 GSM / UMTS channels –
    available with FXO, BRI, PRI and VoIP trunks


•   TOPEX multiAccess – Cellular Gateway – up to 64 GSM/UMTS
    channels

•   OAM PC – web based administration, operation and maintenance
    interface

                                                                        www.birtel.com.tr
                       TOPEX SIM Server features
•   Each SIM can have:
     – Maximum “talk-time” per day and Maximum “talk-time” per month
•   Why?
     – Avoid extra-usage of a SIM - improve network test reliability

•   Algorithms for choosing a SIM:
     – Talk time - the SIM with minimum talk time will be offered
     – Nr of calls - the SIM with the minimum number of calls will be
         offered
     – Last usage - the SIM which has the longest idle state
     – Credit - the SIM which the maximum credit value will be offered
•   Why?
     – To do load-balancing between the SIMs. One does not want to use
         some SIMs more and some less. They have to be used approximately
         equally – establish a constant use of SIM cards during tests

•   Generate SIM “travel” in GSM Gateways located in different places
     – SIMS can be allocated to modules in one gateway and then
        programmed to move to modules in another gateway
    Why?
     ●   Multiple gateways can use minutes from the same SIM – test the availability of network to handle the SIM cards
         movement
                                                                                                     www.birtel.com.tr
                         Alarms and statistics
•   Real time alarming system

•   Alarms sent through SMS or E-Mail in case of:
     – malfunction SIM cards
     – failed connection between system
         components
     – low ASR and ACD
     – insufficient SIM cards in a SIM pool

•   Advanced statistics – report system on SIM, SIM
    Pool, GSM Pool, gateway, operator

•   CDR generation - text file with details such as:
    equipment name, card and port number, provider,
    IMSI code, number of calls or talk time




                                                       www.birtel.com.tr
                               TOPEX VoiBridge
•   VoIP to GSM / UMTS small capacity gateway

•   SIM Server ready – work with TOPEX SIM Server

•   Capacity
     – 2 up to 4 channels VoIP to GSM gateway
     – 2 up to 4 channels VoIP to UMTS gateway

•   1 SIM card per GSM channel

•   SIP and H.323 supported – any to any conversion

•   Mobile frequencies covered:
     – GSM: 850/900/1800/1900 MHz
     – UMTS: 850/1900/2100 MHz

•   Configurable alarms by e-mail, SMS or phone call in case of low ASR or hardware failures




                                                                                       www.birtel.com.tr
                                TOPEX Qutex
•   VoIP PRI GSM / UMTS medium capacity probe

•   Capacity:
     – Up to 10 or 20 GSM/UMTS channels
     – 5 plug-in boards with 2 or 4 GSM/UMTS channels per each board

•   Up to 4 SIM cards for each GSM / UMTS channel

•   SIM Server ready – can be used with TOPEX SIM Server

•   Frequencies covered:
     – GSM: 850/900/1800/1900 MHz
     – UMTS: 850/1900/2100 MHz

•   Configurable alarms by e-mail, SMS or phone call in case of low ASR or hardware
    failures




                                                                                      www.birtel.com.tr
                      TOPEX multiAccess

•   VoIP PRI GSM / UMTS large capacity probe

•   Capacity:
     – Up to 32 or 64 GSM/UMTS channels
     – 16 plug-in boards with 2 or 4 GSM/UMTS channels per each board

•   Up to 4 SIM cards for each GSM / UMTS channel

•   SIM Server ready – can be used with TOPEX SIM Server

•   Frequencies covered:
     – GSM: 850/900/1800/1900 MHz
     – UMTS: 850/1900/2100 MHz

•   Configurable alarms by e-mail, SMS or phone call in case of low ASR or
    hardware failures




                                                                             www.birtel.com.tr
           Solution without SIM Server
Replace SIM    NOC

                             IP

                                  Traffic generator
                                       through
                                    GSM Network




  GSM                                                  GSM
 Network                                              Network




                  TOPEX                 TOPEX
                 VoiBridge             VoiBridge




                                                       www.birtel.com.tr
                 Solution diagram
                          SIM server                                     SIM cards
                          aplication                                    storage box
   Remote                                                                – 512 SIM
    OAM                TOPEX                                             cards/box
                      SIM Server                 TOPEX
                                                 SIM Box
                Central
               Location
Branch 1
                                                              SIM
                                         IP                allocation
  IP PBX
                                       Network

                                            Branch n
 H323 or SIP
                Branch 2
                                             IP PBX
                                                                    GSM               Mobile
                   IP PBX
                                                                   Network            Users
    TOPEX
   VoiBridge                                H323 or SIP
                  H323 or SIP




                                                                               www.birtel.com.tr
                            Solution description
•   The solution includes several remote locations and a central location

•   In each remote location will be installed a TOPEX GSM Gateway equipment – between 4 and 32
    channels GSM Gateway

•   The GSM Gateway will be connected to the company IP PBX through SIP or H.323 trunks

•   The calls to the GSM network from the sites will be routed through the GSM Gateway equipment
    in order to cut the costs of the calls from fixed to mobile

•   In the central location will be installed the SIM Server and the SIM Box equipments

•   All the SIM cards will be stored in the central location

•   The remote locations will not include SIM cards in the GSM Gateways

•   The allocation of SIM cards will be made remotely from the central location to all remote sites




                                                                                           www.birtel.com.tr
                       How it works
                        NOC


           TOPEX
          SIM Server                 TOPEX
                                     SIM Box

                             IP
                                       SIM
                                     request
                                                                            Mobile
                                                                             User
               SIM         SIM
             request    allocation
                                                     SIM
 GSM                                              allocation    GSM
Network                                                        Network




              TOPEX VoiBridge              TOPEX VoiBridge

                                                                   www.birtel.com.tr
           TOPEX SIM Server advantages

•   All SIM cards used are virtually stored and managed in a single central “SIM SERVER”

•   All SIM cards are physically stored in SIM Boxes located at client premises

•   The SIM server allocates the SIM cards remotely, via an IP connection - avoids
    expensive and time-consuming trips for on site SIM card replacement and recharging

•   The GSM modem has access to the remote SIM via a GSM terminal adapter/SIM
    emulator

•   Flexible SIM allocation, according to tariff plans of the mobile carriers (advanced LCR)

•   No need for human intervention to change SIMs manually

•   Different algorithms for SIM selection; flexible SIM timer settings (minute, hour, day)

                                                                                 www.birtel.com.tr
                    Redundancy mechanism I
•   The SIM Server solution includes a central storage system – SIM Box equipment with SIM cards

•   The remote locations contains 4 channels GSM Gateways – TOPEX VoiBridge

•   The allocation of the SIMs is made remotely from the SIM Server application

•   The first redundancy mechanism consist in local SIM cards installed in the GSM Gateways –
    additional to the SIM cards located in the SIM Box

•   The communication between the SIM Box and the remote gateways contains a Keep Alive
    Mechanism on the TCP/IP connection

•   When the TCP/IP connection is broken the Keep Alive mechanism signals the malfunction between
    the gateways and the SIM Box

•   The remote gateways will automatically use the local SIM cards instead of SIM Box cards




                                                                                       www.birtel.com.tr
Redundancy mechanism I diagram
                         Central
                        Location                        Central
                                                      storage for
                                                      SIM cards
          TOPEX
         SIM Server                TOPEX
                                   SIM Box


                                           Keep alive mechanism
                          IP                  – no connection
                                            between the GW and
          TCP/IP        Network                 the SIM Box
       connection is
          down X
                                   X                      VoiBridge
                          X                             will use only
                                                        the local SIM
     TOPEX                              TOPEX               cards
    VoiBridge                          VoiBridge
                        TOPEX
                       VoiBridge



                                                                    www.birtel.com.tr
                    Redundancy mechanism II
•   The second redundancy mechanism implies the use of 2 or several SIM Box storage equipments
    which allows the distribution of SIM cards

•   Instead of using a single SIM Box for storage, the SIM cards are distributed in 2 or several boxes
    with an additional redundancy purpose

•   Each GSM module from the remote GSM Gateways will have assigned 2 SIM cards – one SIM card
    from SIM Box 1 and one SIM card from SIM Box 2

•   The SIM cards from the SIM Box 1 will have attached a higher priority than the SIM cards from SIM
    Box 2

•   When the SIM Box 1 is unavailable the GSM module can not use anymore the SIM card with higher
    priority. In this case the GSM module from the remote GSM Gateway will use the SIM card with a
    lower priority located in the second SIM Box




                                                                                       www.birtel.com.tr
    Redundancy mechanism II diagram
                                                                     Central
                                                                    Location

                     High                SIM Server           Low
                    Priority                                 Priority
                                                                               SIM Cards distribution
SIM Box 1                                                                        in SIM Box 1 and
malfunction                                                                          SIM Box 2

                             SIM Box 1                  SIM Box 2

                                                      GSM module will use
              GSM module uses                             the SIM card
                the SIM card                IP         with a lower priority
               with high priority         Network




                     TOPEX                               TOPEX
                    VoiBridge                           VoiBridge
                                          TOPEX
                                         VoiBridge


                                                                                         www.birtel.com.tr
Redundancy mechanism II diagram
                                                        Central
                                                       Location
               High SIM Box 2      SIM Server           Low
              Priority malfunction                     Priority
                                                                         SIM Cards distribution
                                                                           in SIM Box 1 and
                                                                               SIM Box 2

  SIM Box 1         SIM Box 2   SIM Box 3          SIM Box
                                                  redundant

                                                GSM module will use
      GSM module uses                 IP            the SIM card
        the SIM card                             with a lower priority
       with high priority
                                    Network




                                                                               TOPEX
                  TOPEX                            TOPEX                      multiAccess
                 VoiBridge                        VoiBridge
                                    TOPEX
                                   VoiBridge


                                                                                     www.birtel.com.tr
                Redundancy mechanism III
•   The third redundancy mechanism includes the possibility to use empty SIM Box equipments with the
    same IP address with the operational one

•   When the operational SIM Box equipment fails or it is damaged, the client can use the other SIM
    Box equipments

•   The client need to extract manually the boards with SIM cards from the damaged SIM Box and to
    insert them in the new SIM Box

•   This mechanism will require some time for SIM cards movement but will resolve the problem which
    can appear in the case of a unusable central SIM storage box




                                                                                     www.birtel.com.tr
  Redundancy mechanism III diagram
                                                          Central
                                                         Location
                                SIM Server

SIM Box 1                                                       SIM Cards movement
malfunction                                                        from SIM Box 1
                                                                     to SIM Box 2
                    SIM Box 1                SIM Box 2



                                   IP
                                 Network




               TOPEX                          TOPEX
              VoiBridge                      VoiBridge
                                 TOPEX
                                VoiBridge


                                                                         www.birtel.com.tr
                                     Power consume
•   For power supply back-up autonomy for TOPEX equipments we recommend UPS systems

•   The consumed power for each equipment provided by TOPEX is detailed in the table below:

            TOPEX Equipment                             Consumed power (Watts)
            SIM Server (HP Proliant PC Server)                       250
            SIM Box – 512 SIM cards                                   60
            VoiBridge – 4 GSM channels                                40
            Qutex – 10 GSM channels                                   60
            multiAccess – 30 GSM channels                             90


•   According to equipments installed in each location the UPS can be dimensioned in order to achieve
    the required capacity by the Turkish Police




                                                                                      www.birtel.com.tr
                              UPS autonomy
•    For instance if the central location 1 SIM Server unit, 1 SIM Box unit and 1 multiAccess the
     consumed power is about 400 W (250 + 60 + 90) which means around 560 VA

•    By using an UPS system with 2200 VA (2,2 KVA) the autonomy for the equipments installed in the
     central location will be around 1.5 hours. In case of using a larger capacity UPS, for instance 5KVA
     the power supply autonomy will increase to 3 hours.

•    The central location where the SIM Box and SIM Server will be installed has the highest power
     consume. For the other sites which includes 1 VoiBridge, Qutex or multiAccess the power supply
     autonomy is detailed below:

    Equipment name                  VoiBridge               Qutex                   multiAccess

    Consumed power                    40 W                   60 W                       90 W

    Autonomy for 1 KVA UPS             3h                     3h                       1h 40m

    Autonomy for 3 KVA UPS           8h 50m                   8h                       5h 30m




                                                                                          www.birtel.com.tr
                            Contact
                       www.birtel.com.tr
Birtel                 info@birtel.com.tr
Network        Tel     +90 312 442 56 02
               Fax     +90 312 442 56 03
Technologies   Address Abidin Daver Sk. No:7/11
                         Çankaya - Ankara
                         Türkiye




                                                  www.birtel.com.tr

								
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