Sökning: "voIp"

Visar resultat 16 - 20 av 159 uppsatser innehållade ordet voIp.

1. 16. Analyzing network monitoring systems and objects for a telecommunications company

   Kandidat-uppsats, Mälardalens högskola/Akademin för innovation, design och teknik

   Författare :David Arvedal; [2017]
   Nyckelord :Network Monitoring; Network Monitoring Objects; NMS; Network Monitoring System; Datadog; Monitor VoIP;

   Sammanfattning : The goal with this thesis work has been to identify what a telecommunications company should monitor and to find a network monitoring system that can monitor these identified objects on two different platforms: Windows and Linux. The network monitoring system has been implemented in a telecommunications company’s environment and this thesis presents how the system monitors their environment. LÄS MER

3. 17. NFtables och IPtables : En jämförelse av latens

   Kandidat-uppsats, Högskolan i Skövde/Institutionen för informationsteknologi

   Författare :Jonas Svensson Eidsheim; [2017]
   Nyckelord :firewall; nftables; iptables; security; latency;

   Sammanfattning : Firewalls are one of the essential tools to secure any network. IPtables has been the defacto firewall in all Linux systems, and the developers behind IPtables are alsoresponsible for its intended replacement, NFtables. Both IPtables and NFtables arefirewalls developed to filter packets. LÄS MER

4. 18. On the security of VoIP mobile network operator and international carrier interconnects

   Master-uppsats, KTH/Skolan för elektro- och systemteknik (EES)

   Författare :Mina Naguib; [2016]
   Nyckelord :VoIP; Security; TDM; PSTN; International Carrier Network; Mobile Operators; SBC; Signaling;

   Sammanfattning : All Mobile Network Operators (MNOs) as well as international carriers are moving voice services from the legacy Public Switched Telephone Network (PSTN) to Voice over IP (VoIP). The benefit is that VoIP traffic can be easily rerouted at any moment, thus giving companies a variety of options as traffic can be rerouted to any carrier of choice leading to different Quality of Service (QoS) levels (and thus agreements) as well as different prices to choose from. LÄS MER

5. 19. A reverse proxy for VoIP : Or how to improve security in a ToIP network

   Master-uppsats, KTH/Kommunikationsnät

   Författare :Guillaume Dhainaut; [2016]
   Nyckelord :VoIP; ToIP; SIP; SIPS; RTP; SRTP; SBC; session border controller; security; toll fraud;

   Sammanfattning : The need for security is crucial in Telephony over IP (ToIP). Secure protocols have been designed as well as specific devices to fulfill that need. This master thesis examines one of such devices called Session Border Controller (SBC), which can be compared to reverse proxies for ToIP. The idea is to apply message filters to increase security. LÄS MER

7. 20. Evaluating Voice over IP phone implementation on a freescale Cortex A9 processor running Linux using open source SIP and WebRTC

   Master-uppsats, Umeå universitet/Institutionen för datavetenskap

   Författare :Eric Sjögren; [2016]
   Nyckelord :;

   Sammanfattning : Voice over IP (VoIP) is a methodology that refers to the delivery of multimedia and voice sessions over an Internet connection and it provides an alternative to regular voice calls using phone lines, usually referred to as the Public Switched Telephone Network (PSTN). Web Real-Time Communication (WebRTC) is an API denition for browser-to-browser VoIP applications; the denition acts as a foundation for applications using voice, video, chat, and P2P le sharing in a browser environment without the need of either internal or external plugins. LÄS MER