2.5G Lab Kit

We offer 2.5G lab kit for learning the current and future mobile communication networks.This next generation lab has been designed for colleges, universities, research and development labs and for anyone eager to understand the complexities of next generation of networks.This lab kit allows the user to replicate all the components of a complete GSM mobile cellular network. The students and researchers have complete control over BTS, BSC,MSC and as well as user equipment.

Complete Lab Package

2.5G Lab Kit is intended for lab use and is ideal for colleges, universities, testing labs. It allows to replicate small 2.5G GSM (Voice + GPRS) cellular network and start making calls in less than an hour.
It allows you to connect a standard GSM mobile phone directly with VOIP networks as SIP endpoint to call PSTN landline or mobile phone on other networks in other locations using a software based GSM BTS.

The lab is complete with base transceiver station, multiband cellular phones, backhaul radio. Base station controller (BSC) functions and operations/maintenance (O&M) and network management system (NMS) functions for controlling the base stations with software provided for exceptional value and performance.

Real-time Interface

Setup an indoor Mobile Communication Network emulating a practical network. Understand the basics of modern mobile communication. Comprehensive understanding from Modulation to Scalable network and Encryption. Connect using any mobile phone.

Compact Network in a box interface with integrated Workstation PC. Single box can act as a complete mobile communication system

Area and Scope of Learning
  • Understanding complete Mobile Communication Network including different subsystems. Functioning and role of different components.
  • Integrating separate components to form a scalable network
  • Measure and observe the spectral distribution of GSM frequencies at a given location, decode the channels and geo-locate all the functioning BTS’s
  • Practically understanding the concept of traffic and control channels
  • Understanding the role of different channels such as Paging Channel, TCH, FACCH, SDCCH, SACCH, BCCH, CCCH etc.
  • Configuring the BTS to set Mobile country code, Network operator code, GSM band and ARFCN channel. Understanding the concept of frequency reuse and calculating channel number
  • Differentiating between open and limited registration and their specific application. Configuring according to use case scenario
  • Concept of Phone Number, MSISDN, mobile calling code and allocation of phone numbers
  • Call logging and CDR analysis and importance of Operation and Maintenance Centre
  • Understanding the practical concept of SIM card, IMSI, TMSI, Ki/Kc keys and encryption
  • Working of wireless backhaul radios and configuring the backhaul for various scenarios such as Access Point, Point to Point, Point to Multipoint and Mesh Networking
  • Configure the communication server for IP PBX and VOIP gateway. Understating the role of various protocols such as SIP and RTP
  • Registration of phones to the BTS network and practical working of HLR and VLR
  • Understanding the complete flow of registration with each and every associated channel
  • Transmission and Reception of SMS using mobile network and SMS server
  • List the TMSI of the phones registered on network and its importance in security of network
  • To establish a voice phone call on mobile phone using mobile network, decoding physical and network layer parameters to understand the complete flow control
  • Establish roaming between BTS and User equipment and then configure for call flow
  • Forming mobile sectors with frequency reuse
  • Capture GSM packets using Wireshark and analyse the vulnerability of wireless network
  • SIM programming and use of encryption keys along with different encryption methods available
  • Data communication link using GPRS and understanding the IP data flow via various interfaces and role of SGSN and GGSN
  • Study hard and soft call handoff along with handover
  • Role of backhaul network in designing and planning the network architecture
Configuration
  • 1 integrated Network in a Box which includes SDR based GSM transceiver and a PC running Linux
  • 2 quad-band GSM phones pre-loaded with all relevant softwares
  • Complete Wireless backhaul networking setup for emulating Multi-BTS scenario
  • 2 Multi-band Omni antenna
  • 4 programmable SIM cards along with SIM card writer and software
  • Accessories including Mounting Tripod and fixture, N to SMA adapters, power supply etc
  • Comprehensive documentation including:
    • Pre-Lab study material
    • Experiment manual including more than 25 experiments
    • Video Lectures for pre-lab and experimentation.
Technical Specifications
Frequency Range
GSM850, PGSM900, DCS1800, PCS1900Includes all GSM bands
BandUplinkDownlink
850824–850 MHz869–895 MHz
900880–915 MHz925–960 MHz
18001710–1785 MHz1805–1880 MHz
19001850–1910 MHz1930–1990 MHz
RF
Maximum Output Power+5 dBm ***
Output Level Setting1 dB
Sensitivity-100 dBm
Clock Accuracy< 50 ppb
Factory Calibrated
Carrier Spacing200 kHz
Number of RF Carriers124/374

***Typical operation is at -30dBm for FCC compliant license free safe operation

GSM
ModulationGMSK
Call Capacity7 concurrent Full Rate calls
Data Transmission Rateupto 120 kbit/second
Speech CODECFR (Full Rate)
Physical Interface
Rx AntennaN-type
Tx AntennaN-type
Network InterfaceEthernet/IP RJ45
Power Input12V/ 2.5A
Antenna Specification
Operating Frequency700 MHz – 2700 MHz
Type of AntennaOmni
VSWR< 1.5
Nominal Impedance50 Ohm
List of experiments
  1. Introduction of mobile communication equipment BTS, BSC & UE.
  2. To measure the spectral distribution of GSM frequencies at given location and find a free channel.
  3. To configure the BTS software to set Mobile country code, Network operator code, GSM band and ARFCN channel.
  4. To configure the BTS Software to enable open/limited registration.
  5. To assign a phone number to each registered phone.
  6. To enable call logging of subscribers on BTS.
  7. To get and set your IMSI.
  8. To configure the asterisk communication server for IP PBX and VOIP gateway.
  9. To register phone to the BTS network.
  10. To transmit and receive an SMS using BTS.
  11. To list the TMSI of the phones registered on network.
  12. To establish a voice phone call as echo on mobile phone using 2G BTS.
  13. To establish a voice phone call to another cellular phone using 2G BTS.
  14. To establish a voice phone call to another cellular phone using 2G BTS
  15. To establish a voice phone call to another cellular phone on different network/country using BTS and VOIP gateway.
  16. To establish roaming between BTS and UE.
  17. To capture GSM packets using Wireshark.
  18. To establish a data communication link using GPRS.
  19. To study hard & soft call handoff.
  20. Design and Implement a complete real-time RF transmitter using Gaussian Minimum Shift Keying (GMSK) modulation scheme
  21. Design and Implement a complete real-time RF receiver using Gaussian Minimum Shift Keying (GMSK) modulation scheme
  22. Design and Implement a complete real-time RF transmitter using Gaussian Frequency Shift Keying (GFSK) modulation scheme
  23. Design and Implement a complete real-time RF receiver using Gaussian Frequency Shift Keying (GFSK) modulation scheme
  24. Design and implement a GSM receiver to decode real-time GSM control channels
  25. Design and implement a GSM decoder with analysis in Wireshark for real-time traffic monitoring
  1. Design and implement a system to find the location of neighbouring GSM cell towers and map on Google Maps in real-time
  2. Design and Implement a complete real-time RF transceiver link in the presence of a Rayleigh channel
  1. Design and Implement a complete real-time RF transceiver link in the presence of a Rician channel
  2. Design and Implement a complete real-time RF transceiver link in the presence of a AWGN channel
  3. Design and implement a real-time system using Convolutional Block Coding and Decoding over a RF transceiver link
  4. Design and implement a complete real-time RF transceiver link for bit error rate measurement in a system using Convolution Block Coding and Decoding
  5. Design and implement a real-time system using Reed-Solomon Coding and Decoding over a RF transceiver link
  6. Design and implement a complete real-time RF transceiver link for bit error rate measurement in a system using Reed-Solomon Coding and Decoding
  7. Design and implement a real-time system for Bit Error Measurement(BER) Measurement over a RF transceiver link
  8. Design and implement a system for real-time Bit Error Rate(BER) measurement using a GMSK modulated RF transceiver link
  9. Design and implement a real-time system over a RF transceiver link to understand Carrier Acquisition using Phased Locked Loop(PLL)
  10. Design and implement a real-time system over a RF transceiver link to understand carrier frequency recovery and phase error tracking using Costas Loop
  11. Design and implement a real-time system to explore the concept of complex signals over RF transceiver link
  12. Design and implementation of a system to explore the differences and improvement in Complex signals over real signals
  13. Design and implement a system to improve the performance using Least mean squares Equalisation for ISI in a real-time transmission and reception scenario
  14. Design and implement a real-time system to explore the concept of Fading over a RF transceiver link
  15. Design and implement a real-time system to explore the concept of Multi-path channel over a RF transceiver link
  16. Design and implement a real-time system using Frequency Division Multiplex (FDM) over a RF transceiver link
  17. Design and implement a complete system to transmit gaussian noise over a real time RF transceiver link.
  18. Design and implement a complete system to transmit various noise types over a real time RF transceiver link
  19. Design and implement a real-time system using Time Division Multiplex (TDM) over a RF transceiver link
  20. Design and implement a real-time system for measurement of Signal to Noise Ratio (SNR) over a RF transceiver link
  21. Design and implement a realtime system to receive GSM uplink channel.
Shipping List Box Dim: 56 X 45 X 18 Weight: 7kg
No.List of items supplied with 2.5G Lab Kit
Qty.

12.5G Network in a Box + USB 3.0 Lead2
2RG 316 Teflon SMA(M)-SMA(M) Cable4
3SMA(M)-SMA(F) Attenuator 20 dB1
4Monopole antenna + SMA(M)-SMA(M) Adapter2
5Log Periodic antenna + SMA(M)-SMA(M) Adapter2
62G Phones2

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