VOIPBY: PAUL MAKRAM FARESPresented TO: Prof. Shawkat K. Guirguis
AGENDA What is VoIP Why Migrate to VoIP General VoIP Configuration Advantages Disadvantages
DISCLAIMER This presentation is presented at a very high level overview of the technology used to provide a basic understanding of IP Telephony commonly know as “VoIP”. The information presented is taken from previously release DoD and DISA documentation regarding the integration and the deployment of VoIP technology.
What is VoIP? VoIP stands for “Voice over the InternetProtocol” and is also referred to as IP telephony. This technology enables users to: Make calls by moving packets of informationover the Internet using broadband network connection to make phone calls to other VoIP and regular phone users and ”Public Switched Telephone Network (PSTN)” or analog telephones
VoIP Overview Telephony is a process that enables the IP transfer of voice data over a packet switched network as opposed to the traditional circuit switched network. The transmission of voice packets over the Internet Protocol (IP) is known as VoIP and is implemented properly holds the promise of converged networks and unified communications
The Joint Chief of Staff (JCS) Military Communications Electronics Board (MCEB) endorsed three near term major operational drivers for the introduction of VoIP services to support network centric warfare: Convergence of secure desktop services at major command. Small footprint and highly mobile Investment many Military Departments and Agencies have deployed VoIP
Emerging Technology Voice Over Internet Protocol (VoIP) is an emergingtechnology that is a critical component of network centric warfare. All major common carriers and telecommunications switch vendors plan to migrate to VoIP. This is the key concept to effective Net centric warfare
VoIP Configuration Although a very different technology and approach to providing voice services, some of the same component concepts that make up the PSTN are also found in VoIP networks. VoIP networks must perform all of the same tasks that the PSTN does, in addition to performing data and signaling gateway functions to the existing public network. There are four major components : The IP network Call processor/controllers Media/signaling gateways Subscriber terminals
Convergence A VoIP network can be viewed as one logical switch in distributed form. The IP infrastructure must ensure smooth delivery of voice and signaling packets to the VoIP elements.
IP Centric An IP Centric VoIP architecture is designedaround an IP based core switching system. Centric solutions have distributed IP devices that work together to perform the functions of a TDM based circuit- switch.
VoIP Advantages Low cost Use existing infrastructure Scalability Call forwarding Voice mail and fax applications Call waiting Caller ID 3 way calling Send documents and/or pictures while you talk at the same time
VoIP Disadvantages Lack of continuous service during a power outage Emergency calls (911) (Problem of locating call) Sound quality and reliability Vulnerable to same attacks as IP data networks Vulnerable to spam (Spam over Internet Telephony) Toll fraud (Call spoofing) Possibility of data loss.
Conclusion Voice Over Internet Protocol (VoIP) is an emerging technology that is a critical component of network centric warfare, and is associated with potential command center desk top convergence, mobility enhancements, infrastructure reduction,multi- media collaboration, and cost avoidance.