Computer Networks
FC '97 Proceedings of the First International Conference on Financial Cryptography
Voice over IPsec: Analysis and Solutions
ACSAC '02 Proceedings of the 18th Annual Computer Security Applications Conference
Assessing the quality of voice communications over internet backbones
IEEE/ACM Transactions on Networking (TON)
Voice-Quality Monitoring and Control for VoIP
IEEE Internet Computing
Migration to 4 G: Mobile IP based Solutions
AICT-ICIW '06 Proceedings of the Advanced Int'l Conference on Telecommunications and Int'l Conference on Internet and Web Applications and Services
Securing VoIP Networks: Threats, Vulnerabilities, and Countermeasures
Securing VoIP Networks: Threats, Vulnerabilities, and Countermeasures
ICCIT '07 Proceedings of the 2007 International Conference on Convergence Information Technology
Internet Call Delay on Peer to Peer and Phone to Phone VoIP Network
ICCET '09 Proceedings of the 2009 International Conference on Computer Engineering and Technology - Volume 02
Impact of Encryption on Qos in Voip
SOCIALCOM '10 Proceedings of the 2010 IEEE Second International Conference on Social Computing
VoIP: making secure calls and maintaining high call quality
Proceedings of the 8th International Conference on Advances in Mobile Computing and Multimedia
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Modern multimedia communication tools must have high security, high availability and high quality of service (QoS). Any security implementation will directly impact on QoS. This paper will investigate how end-to-end security impacts on QoS in Voice over Internet Protocol (VoIP). The QoS is measured in terms of lost packet ratio, latency and jitter using different encryption algorithms, no security and just the use of IP firewalls in Local and Wide Area Networks (LAN and WAN) in the lab and in the real world. The results of laboratory tests indicate that the impact on the overall performance of VoIP depends upon the bandwidth availability and encryption algorithm used. The implementation of any encryption algorithm in low bandwidth environments degrades the voice quality due to increased loss packets and packet latency, but as bandwidth increases encrypted VoIP calls provided better service compared to an unsecured environment.