Illinois Tech students presented and demonstrated their Real-Time Communications projects on April 28. Carol Davids, Industry Professor of Information Technology and Management, hosted the event. The presentations included the following:

• Indoor Location for NG9-1-1 calls
  BlueTooth Implementation:  The student team described and demonstrated their system for providing the indoor location of a 9-1-1 caller – based on the location of Bluetooth beacons and using a Campus Emergency Address Database (CEAD) along with an Android application of their own design.
  WiFi Implementation:  Improved the accuracy of our original implementation using the locations of the Campus’ Wi-Fi access points rather than the locations of Bluetooth beacons were described. Comparative data on the two methods were provided.
  Presenters: Bharat Ramaswamy Nandakumar, Alberto Gonzalez Trastoy, Neilabh Okhandiar and Clement Causse
• SIP for Mobile Networks: The students created their own 2G network using Software Defined Radio (SDR) technology, using a SIP server to replace the BTS. They were able to place calls from phones on their 2G network to SIP phones on the Internet and in particular showed how calls from their 2G network can be carried to the PSAP of our IIT Emergency Services Network.
  Presenters: Nthenya Matheka and Anshul Porval
• WebRTC-based PSAP for Emergency Communications: The students described and demonstrated the current state of their WebRTC-based Public Safety Answering Point (PSAP). Last semester we made a call from a WebRTC user to the PSAP using the signaling channel to carry the location information. This semester we used the data channel to carry this information and have also added Google maps to the location display.
  Presenters: Haotian Gu and Armita Roohinejad
• SIP Performance Testing in the Cloud: The students set up a SIP Performance Test Bed in the Cloud and compared its results with those obtained by one they created in the lab. They reported their comparative results and described how the cloud-based test bed can be used by organizations outside the lab that wish to test the performance of their SIP Servers using our test plans and methodology.
  Presenters: Sreeram Haridas and Sampada Narasimha Prasad
• NG9-1-1 Test Bed Characterization
  The students tested the performance of the lab’s NG9-1-1 test beds to determine the maximum rate at which it would handle calls with no failures. They reported their results and described the architecture and parameters of the network that they tested.
  The students described the flow of information on the lab’s NG9-1-1 test beds and related these flows to the NENA i3 standards and the testing the lab performs for vendors and NENA.
  Presenters: Vinay Himanthakumar, Nischal Ravi Kumar, Vipul Kumar Kothifoda and Ujjwala Vuyalla
• Crossroads – The student team built a specialized server in the cloud that enables calls generated in one lab test bed to be routed to any other of the lab’s test beds. They demonstrated a call that flows from the Mobile SIP test bed to the NG9-1-1 test bed and explained the design of the Crossroads server.
  Presenters: Tracy Francis and Bo Pang
• SIP with Transport Layer Security – Performance Testing
  Presenter: Salman Omer

See additional pictures on the School of Applied Technology Facebook page.