Essays about: "voip over wireless networks"

Showing result 6 - 10 of 16 essays containing the words voip over wireless networks.

  1. 6. Evaluation of UDP and SCTP for SIP-T and TCP, UDP and SCTP with constant traffic

    University essay from Blekinge Tekniska Högskola/Avdelningen för telekommunikationssystem

    Author : Muhammad-Sarfraz Zafar; Muhammad-Shoaib Gill; [2009]
    Keywords : LaCcviLm ;

    Abstract : In recent years, Voice over IP (VoIP) has gained a lot of popularity. Signaling being an important part of VoIP has been addressed by the (IETF) SIGTRAN working group to meet Quality of Service as given by Public Switched Telephone Network (PSTN), so that both PSTN and VoIP can co-exit and work together in a seamless manner SIP (Session Initiation Protocol) developed by IETF for VoIP signaling is a communication control protocol capable of running on different transport layers, e. READ MORE

  3. 7. Secure Session Mobility for VoIP

    University essay from KTH/Kommunikationssystem, CoS

    Author : Samir Dzaferagic; [2008]
    Keywords : Secure VoIP; SIP; Mobile IP; Session Mobility;

    Abstract : High data rate wireless packet data networks have made real-time IP based services available through mobile devices. At the same time, differences in the characteristics of radio technologies (802.11/WiFi and 3G networks) make seamless handoff across heterogeneous wireless networks difficult. READ MORE

  4. 8. Packet Aggregation in Linux

    University essay from Institutionen för informationsteknologi

    Author : Jonas Brolin; Mikael Hedegren; [2008]
    Keywords : Network; Programing; Linux; Wireless Mesh Networks;

    Abstract : Voice over IP (VoIP) traffic in a multi-hop wireless mesh network (WMN) suffers from a large overhead due to mac/IP/UDP/RTP headers and time collisions. A consequence of the large overhead is that only a small number of concurrent VoIP calls can be supported in a WMN[17]. READ MORE

  5. 9. Performance of VoIP strategies for hybrid Mobile Ad Hoc Networks

    University essay from Fakulteten för ekonomi, kommunikation och IT

    Author : Gonzalo Iglesias Aguiño; [2007]
    Keywords : Mobile Networks;

    Abstract : Last decade, a lot of research has been done in wireless communication technologies. Mobile nodes such personal digital assistants (PDAs), notebooks and cell phones are nowadays used in human’s daily life. READ MORE

  6. 10. Improving vertical handover performance for RTP streams containing voice : Using network parameters to predict future network conditions in order to make a vertical handover decision

    University essay from KTH/Kommunikationssystem, CoS

    Author : Daniel Yunda Lozano; [2007]
    Keywords : VoIP; Handover; WLAN measurements;

    Abstract : Wireless local area networks WLAN and Voice over IP technologies enable local low cost wireless telephony, while cellular networks offer wide-area coverage. The use of dual mode WLAN-cellular terminals should allow cost savings by automatically switching from GSM to WLAN networks whenever it is feasible. READ MORE