Packet Data and RTP Traffic Emulator

Featured Product from GL Communications, Inc.

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Stress and Load Testing with Massive Subscriber Simulation for Packet Data/RTP Traffic

Testing IP network performance with high volume calls is increasingly important to Wireless Carriers, Internet Service Providers, and Equipment vendors to ensure that quality of experience does not degrade with call intensity, volume, or protocol. Load and stress testing are important to verify stability of IP network and network elements pre- and post-deployment.


With GL’s advanced bulk call generator appliances MAPS™ Server with PacketLoad and RTP HD Server high volume of calls with packet data (HTTP, PCAP) or RTP (Voice/SMS) traffic can be simulated. 

These High Density Call Generator Appliances are available as special purpose rackmount network appliance with 4x1GigE NIC capable of high call intensity (hundreds of calls/sec) and high volume of sustained calls (tens of thousands of simultaneous calls/platform). It also supports various methods for massive simulation of subscribers (up to 500000) with high density (up to 4 Gbps or 40 Gbps) mobile data or voice/sms traffic simulation to easily stress or load test 4G/3G/2G networks.

The supporting MAPS™ application also provides useful statistics to verify the simulated mobile data/voice/sms traffic. Users can customize the statistics for the generated stateful TCP/HTTP, and PCAP Replay and other Mobile Data traffic and plot the statistics graphically in Bar/Line/Pie charts form. RTP voice quality metrics (R-Factor, LMOS, C-MOS, Loss, Delay) for the received calls are also calculated and are reported to MAPS™ application.

Latest Enhancements

GL’s MAPS™ Emulator for IP interface is enhanced with few significant features such as CSV files support and Auto-generation method for massive subscriber simulation used in load testing; PacketLoad traffic module is enhanced to support both HTTP and PCAP playback; and Remote access to RTP HD interface for CS traffic simulation. These are discussed briefly below:

Generating Bulk Subscriber Profiles using Database, CSV, and Auto-generated Users methods

In real time scenario, there exists huge number of subscribers with unique UE parameters. MAPS™ supports bulk call generation to stress and load test the network with number of subscriber profiles. Each profile can have unique parameters to simulate different real-time scenarios. However, creating and maintaining massive number of XML based subscriber profiles with unique mobile identifiers such as IMSI, TMSI, MSISDN and traffic parameters is not feasible. Therefore, MAPS™ test tool is enhanced to support CSV subscriber profiles.

CSV database system used within MAPS™ is a simple Excel® file that can dynamically generate up to 20,000 number of subscribers with unique identifiers (IMSI, TMSI, MSISDN) and other key parameters in sequential order.

For massive UE simulation, it is recommended to use CSV option, with which MAPS™ access the UE related information directly from CSV files.