University System Design Analysis: NG9-1-1 Project and Modifications

This report provides an analysis of the NG9-1-1 system design, a project funded by the US Department of Transportation to develop an IP-based emergency communication system. The analysis focuses on the system's architecture, which utilizes off-the-shelf components and the SIP protocol for call routing. The report identifies potential modifications, such as using the PRI framework instead of SIP for improved call quality, implementing a five-system architecture with an evaluative model, and incorporating UML diagrams for system requirement analysis. The author also suggests avoiding custom-off-the-shelf subsystems due to security concerns and limited access, advocating for self-developed applications to enhance security and effectiveness. The report concludes with references to relevant sources, providing a comprehensive overview of the system and its proposed enhancements.

Running head: ANALYSIS OF SYSTEM DESIGN
Analysis of system design
Name of the student
Name of the University
Author note

1ANALYSIS OF SYSTEM DESIGN
Overview
The NG9-1-1 system is also known as the next generation system which is considered to
be a development and research project which is supposed to be funded by the US Department of
Transportation (USDOT). This will be aimed for defining the framework and to deploy
emergency communications based on the use of Internet Protocol (IP) (Next Generation 9-1-1
(NG9-1-1) System Initiative Final System Design Document, 2018). The main objectives of this
project is to enable the use of emergency contacts by dialing 9-1-1 from their wired or wireless
phones or by even utilizing the IP-based communications.
System analysis
The main use of the configurations in this project utilizes off-the-shelf systems. This is a
major benefit for the project (Next Generation 9-1-1 (NG9-1-1) System Initiative Final System
Design Document, 2018). However, this concept can also share some disadvantages as well. In
addition, the system also used the SIP concept (Session Initiated Protocol) to be used as a
signaling protocol for call routing, establishment and termination.
For addressing the need to test call origination, various systems and equipments were
tested. These included PSTN telephones, cellular phones, call centers and even laptop calling
features.
Modifications
I think that in place of the SIP protocol, the project could have used the PRI framework
(Primary rate interface). Both of the SIP and the PRI uses the VoIP protocol for connecting and

2ANALYSIS OF SYSTEM DESIGN
connection to a PSTN is needed. However, in terms of the quality of the call achieved, the PRI is
a more effective solution which can be utilized effectively in case of emergencies.
Another modification that I could have adopted is in the design approach used. I have
studied many project management frameworks ("An introduction to the Unified Modeling
Language", 2018). For this reason, I think that I could have used five-system architecture in
place of the four-system architecture that has been used. The extra layer would be after the
preliminary system design to include the evaluative model for evaluating the designs.
Moreover, if I were to do the project I would have considered making UML diagrams as
possible. This will be utilized in knowing the requirements of the system. In addition, this will
also be utilized in denoting the activities that will be performed by the users associated with it
("Examples of UML use case diagrams - online shopping, retail website, bank ATM, e-Library,
airport check-in, restaurant, hospital.", 2018). For example, firstly, the users will call the system.
Secondly, the administrator will oversee the processes. Lastly, the service provider will be
responsible for connecting the calls.
Lastly, the use of custom-off-the-shelf subsystems would have been avoided by me. This
is mainly because the use of the commercially made application cannot be effectively utilized.
The vendor who is responsible for developing the solution will not provide full access to the
system (Kruger, Abu-Mahfouz & Hancke, 2015). As such, this will raise various concerns of
security issues in the company responsible for the project. This is the reason that I believe the use
of self-developed applications will be a great application. This will be responsible for enhancing
the security of the application. As such, the problems related to less effectiveness will also be
addressed.

3ANALYSIS OF SYSTEM DESIGN
References
An introduction to the Unified Modeling Language. (2018). Ibm.com. Retrieved from
https://www.ibm.com/developerworks/rational/library/769.html
Examples of UML use case diagrams - online shopping, retail website, bank ATM, e-Library,
airport check-in, restaurant, hospital.. (2018). Uml-diagrams.org. Retrieved from
https://www.uml-diagrams.org/use-case-diagrams-examples.html
Kruger, C. P., Abu-Mahfouz, A. M., & Hancke, G. P. (2015, March). Rapid prototyping of a
wireless sensor network gateway for the internet of things using off-the-shelf
components. In Industrial Technology (ICIT), 2015 IEEE International Conference
on (pp. 1926-1931). IEEE.
Next Generation 9-1-1 (NG9-1-1) System Initiative Final System Design Document. (2018).
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