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PIMRC
2008
IEEE
13 years 11 months ago
Performance of VoIP services over 3GPP WCDMA networks
We analyze the performance ofvoice services over 3GPP WCDMA Networks for Release 99 and Release 7 deployments. We show, by using simulations, that the system capacity of Release 7 ...
Ozcan Ozturk, Vinay Chande, Haitong Sun, Mehmet Ya...
IJNSEC
2007
128views more  IJNSEC 2007»
13 years 4 months ago
A Comprehensive Secure VoIP Solution
VoIP represents the future of digital voice communications and many carriers are preparing for the VoIP revolution. However, a number of outstanding issues need to be settled. The...
Ashraf D. Elbayoumy, Simon J. Shepherd
INFOCOM
2002
IEEE
13 years 9 months ago
Performance Optimization of VoIP Calls over Wireless Links Using H.323 Protocol
—Intelligent mobile terminals (or users) of next generation wireless networks are expected to initiate voice over IP (VoIP) calls using session set-up protocols like H.323 or SIP...
Sajal K. Das, Sanjoy K. Sen, Naveen K. Kakani
NOSSDAV
2005
Springer
13 years 10 months ago
1-800-OVERLAYS: using overlay networks to improve VoIP quality
The cost savings and novel features associated with Voice over IP (VoIP) are driving its adoption by service providers. Such a transition however can successfully happen only if t...
Yair Amir, Claudiu Danilov, Stuart Goose, David He...
WICOMM
2008
83views more  WICOMM 2008»
13 years 4 months ago
iPTT: peer-to-peer push-to-talk for VoIP
This paper proposes iPTT, a peer-to-peer Push-to-Talk (PTT) service for Voice over IP (VoIP). In iPTT, a distributed and mobile-operator independent network architecture is presen...
Jiun-Ren Lin, Ai-Chun Pang, Yung-Chi Wang