Implementing IP Phones in IT Organizations

This assignment presents a comprehensive report examining the implementation of IP phones within IT organizations. It explores the advantages of VoIP systems, such as improved communication efficiency and reduced costs, while also addressing potential limitations like latency issues and security concerns. The report delves into the socio-technical aspects of VoIP deployment, emphasizing the importance of community involvement and network flexibility. It concludes by highlighting VoIP's suitability for modern businesses seeking enhanced communication capabilities.

Running head: NETWORKED APPLICATIONS
Network Management and Services
Name of the Student
Name of the University
Author’s Note

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Table of Contents
Introduction..........................................................................................................................2
Technical Overview.............................................................................................................2
Background..........................................................................................................................2
Deployment and performance issues...................................................................................3
Configuration issues............................................................................................................3
Reliability and availability...................................................................................................3
Security issues.....................................................................................................................4
Future application................................................................................................................4
Benefits................................................................................................................................5
Drawbacks...........................................................................................................................5
Advantages..........................................................................................................................5
Disadvantage........................................................................................................................6
Problems and limitations.....................................................................................................6
Socio-technical aspect.........................................................................................................6
Conclusions..........................................................................................................................6
References............................................................................................................................7

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Introduction
The report is prepared on the topic application of IP phones for IT organization and the
technical overview of the implementation of the VOIP technology in a small business network is
researched. The deployment and the performance issues faced by the organization for the
implementation of the VOIP technology is researched along with the reliability of the IP phones
when compared with the traditional voice communication system. A right VOIP solution should
be selected for the transformation of the current business process and implementation of
flexibility in the business.
Technical Overview
The voice over IP is the most suitable solution for the large and the small IT companies
and it is a revolutionary technology that can be applied in the business process for reducing the
cost of telecommunication [5]. The VOIP technology is used for making calls over the internet
instead of the traditional telephone lines. The dial up or broadband connections can be used for
the implementation of VOIP service and lowering the cost of the company.
Background
The current network infrastructure of an organization can be used for setting up the VOIP
network ad lowering the communication cost of the business. The different branches of the
organization should be configured for the installation of the IP telephones and there are two
types of VOIP such as hosted VOIP and premises based VOIP [7]. For the hosted PBX the
service provider is responsible for installation of the IP phones and management of the
technology required for implementation of the phone service. A monthly fees can be charges by

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the service provider for the services used [2]. The on premise PBX uses recent technology such
as SIP trunking to use the traditional phone lines or internet as a medium of communication.
Deployment and performance issues
A converges IP network is required for the installation of the VOIP system and the
network should be capable of transmitting all types of data including images, videos and voice.
The bandwidth of the network should be high such that no collision occurs between the data
packets passing over the network because it may reduce the quality of the call [1]. The
calculation of the bandwidth required for the establishment of the VOIP call is also an important
factor for the analysis of the quality of the network and improvement of the performance. The
use of appropriate protocol such as NCS, SIP and MGCP must be applied for the allocation of
the resources and configuration of the QoS.
Configuration issues
The VOIP network should be separated from the data network and different VLANs
should be created for voice and data for reducing the risk of collision between the data packets. If
the IP phone installed in the network is not registered then the VOIP configuration should be
done on the VOIP device [8]. DNS problem can also occur and for resolving the error SIP server
name should be changed with the corresponding IP address and the IP phones should be restarted
for getting the dial tone.
Reliability and availability
The reliability and the availability of the IP phone depends on the VOIP configuration of
the network. The network should be controlled with QoS and MPC for reducing the congestion

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in the network and management of the traffic in the network [10]. It also depends on the network
architecture for guaranteeing the stability of the network and causing minimum delay for the
rerouted traffic.
Security issues
There are different security issues such as any peer connected with a malicious ISP can
alter the SIP message send by the other peers. Any of the peer might not want to share message
in the network but it can be read by the other per connected in the network [4]. The hacker can
get access of the service provided by the ISP since encryption are not used in SIP for controlling
the VOIP authentication and thus the user credential becomes vulnerable. The username,
password and the phone number can be fetched by the hacker using Eavesdropping for obtaining
control on the calling plan, billing information, voicemail and call forwarding [6]. DoS attack
can also affect the network and consuming the bandwidth of the network for halting the calling
process.
Future application
With the implementation of the IP telephony the employees working in the organization
can use the drag and drop feature for sharing files and videos in a teleconferencing. The VOIP
can be integrated with the cloud, social media and IoT for improvement of the functionality and
development of the VOIP [9]. It can be used for the virtualization of the office and
implementation of cloud phone system for lowering maintenance and the hardware cost. In
future chatbox service can be integrated with the VOIP for making a bigger impact on the
business. The IoT device can be used for sending automated messages to the registered numbers
for any emergency condition.

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Benefits
It can be used for combination of the remotely located office and reduce the waiting time.
A local area network is required for placing calls and separate electricity should be used for
running the device. The IP phone are easier to install and configure when compared with the
proprietary telephone system. It is also easier for management because there are GUI based
interface for the configuration [3]. Different cost savings can be implemented with the use of
VOIP providers and the cost of the phone wiring can be eliminated for improvement of the
efficiency of the network. The vendor lock in is also not required for the VOIP network because
the service provider can eb changed. New features can be added because it is a software based
and auto attendant, video and audio conference can be used.
Drawbacks
The internet connectivity is the main issue of the IP network and congestion in the
network causes poor quality of voice and call frop. For the emergency calls the location of the
caller cannot be identified because it does not have direct relation with the address and the
number [8]. VOIP network have issues when establishment of connection between the
conventional modem that required a number for dial up and the satellite television receivers.
Advantages
The main advantage of the IP telephony is the reduction of the cost and allowing the
organization to run voice service by purchasing multiple services from the ISP [5]. Multiple
services can run on the IP network moderately using services from different providers.

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Disadvantage
The main disadvantage is that if the IP network fails all the service would be stopped and
the business would face a huge loss.
Problems and limitations
When the network is exposed to high latency internet call connectivity cannot be
established and the system cannot function effectively for satellite internet connection [7]. When
other digital instrument is used the network ca become redundant.
Socio-technical aspect
Community level performance should be applied for the development of the workplace
ideas and design the VOIP network according to the needs of the organization [2]. The network
should be made flexible and adopt changes such as addition of new IP phone in the network.
Conclusions
From the above report it can be concluded that with the implementation of the IP phone
in IT organization the organization would be benefited. It would allow different departments to
communicate with each other and share videos and media in tele conferencing meetings. The
efficiency in the work can be improved and the cost of communication can be decreased. It is an
obvious choice for any company because it provides twice features than the traditional phone
system at a half price.

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References
[1]G. Sherstneva, "INFORMATION SECURITY IN IP TELEPHONY", History. Economy.
Geopolitics, no. 2, pp. 286-292, 2016.
[2]A. Ojugo., "Technical Issues for IP-Based Telephony in Nigeria", International Journal of
Wireless Communications and Mobile Computing, vol. 1, no. 2, p. 58, 2013.
[3]M. Akbar and M. Farooq, "Securing SIP-based VoIP infrastructure against flooding attacks
and Spam Over IP Telephony", Knowledge and Information Systems, vol. 38, no. 2, pp. 491-
510, 2012.
[4]Y. Soupionis and D. Gritzalis, "Hacking VoIP", Computers & Security, vol. 32, p. 267, 2013.
[5]S. Alouneh, S. Abed and G. Ghinea, "Security of VoIP traffic over low or limited bandwidth
networks", Security and Communication Networks, vol. 9, no. 18, pp. 5591-5599, 2016.
[6]D. Chandirasekaran, G. Aghila and P. Thiyagarajan, "A Trustable Key Exchange Protocol for
Mobile Oriented VoIP Devices via ECDH and Synchronous Key Update Mechanism", Procedia
Engineering, vol. 38, pp. 2263-2271, 2012.
[7]"Performance Evaluation of Voice over IP over WiMAX", International Journal of Science
and Research (IJSR), vol. 5, no. 6, pp. 865-867, 2016.
[8]D. Saxena, P. Gour and B. Shrman, "An Approach to Design and Reduce Cost of IP
Telephony using SIP TRUNKING", International Journal of Computer Applications, vol. 127,
no. 10, pp. 7-11, 2015.

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[9]D. Strzęciwilk, "Examination of Transmission Quality in the IP Multi-Protocol Label
Switching Corporate Networks", International Journal of Electronics and Telecommunications,
vol. 58, no. 3, 2012.
[10]"VoIP and Voice over LTE", International Journal of Science and Research (IJSR), vol. 4,
no. 12, pp. 374-379, 2015.