Sökning: "voice over IP"

Visar resultat 11 - 15 av 91 uppsatser innehållade orden voice over IP.

  1. 11. Talöverföring för trygghetslarm över internet : Voice over IP for personal alarms

    Uppsats för yrkesexamina på grundnivå, KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Författare :Peter Stenman; Mikael Janson; [2016]
    Nyckelord :VOIP; SIP; Raspberry Pi; PCB; VOIP; SIP; Raspberry Pi; PCB;

    Sammanfattning : During the last couple of years there has been a shift in technology within the Swedish elderly care where the analog personal security alarm is being replaced with personal security alarm that uses internet to communicate. This transition happens due to the ever increasing access to the internet among the elderly and the decreasing availability of analog personal security alarms. LÄS MER

  3. 12. Utilizing Multi-Core for Optimized Data Exchange Via VoIP

    Master-uppsats, KTH/Medicinsk bildteknik

    Författare :Sohrab Azami Ghadim; [2016]
    Nyckelord :VoIP; telemedicine; ECG; SIP; Visual C ; PJSIP; Multi-threading; voice stream; Data Stream;

    Sammanfattning : In contemporary IT industry, Multi-tasking solutions are highly regarded as optimal solutions, because hardware is equipped with multi-core CPUs.  With Multi-Core technology, CPUs run with lower frequencies while giving same or better performance as a whole system of processing. LÄS MER

  4. 13. Estimating Internet-scale Quality of Service Parameters for VoIP

    Master-uppsats, Linköpings universitet/Programvara och system

    Författare :Markus Niemelä; [2016]
    Nyckelord :Voice over IP VoIP ; Quality of Service QoS ; cost estimation; QoS-driven routing;

    Sammanfattning : With the rising popularity of Voice over IP (VoIP) services, understanding the effects of a global network on Quality of Service is critical for the providers of VoIP applications. This thesis builds on a model that analyzes the round trip time, packet delay jitter, and packet loss between endpoints on an Autonomous System (AS) level, extending it by mapping AS pairs onto an Internet topology. LÄS MER

  5. 14. Robust Echo-Cancellation for Simple VoIP-Applications in Embedded Systems

    Master-uppsats, Linköpings universitet/Kommunikationssystem

    Författare :Anton Eriksson; [2015]
    Nyckelord :VoIP; Adaptive Filtering; Signal Processing;

    Sammanfattning : Voice over IP (VoIP) is the group of techniques for delivering voice communications over Internet Protocol (IP) networks. It has mainly served as the possible substitution for regular PSTN over the last decades, but has recently gained an increased interest in various areas such as alarm applications and customer service. LÄS MER

  7. 15. Design of IP Multimedia Subsystem for Educational Purposes

    Master-uppsats, KTH/Radio Systems Laboratory (RS Lab)

    Författare :Mikael Rudholm; [2015]
    Nyckelord :IMS; Next generation networking; Internet telephony; SIP application; service creation; virtual machines; IMS; nästa generations nätverk; Internet-telefoni; SIP applikationer; utveckla tjänster; virtuella maskiner;

    Sammanfattning : Internet Protocol multimedia subsystem (IMS) is an architecture for services such as voice over Internet Protocol (VoIP) in IP based communication systems. IMS is standardized by the 3GPP standardization forum, and was first released in 2002. Since then IMS has not had the wide adoption by operators as first anticipated. LÄS MER