Results 11 to 20 of about 10,303 (222)

Providing End-to-End Connectivity to SIP User Agents Behind NATs [PDF]

open access: yes, 2008
The widespread diffusion of private networks in SOHO scenarios is fostering an increased deployment of Network Address Translators (NATs). The presence of NATs seriously limits end-to-end connectivity and prevents protocols like the Session Initiation ...
Baldi, Mario   +3 more
core   +1 more source

ALEX: Improving SIP Support in Systems with Multiple Network Addresses [PDF]

open access: yes, 2005
The successful and increasingly adopted session initiation protocol (SIP) does not adequately support hosts with multiple network addresses, such as dual-stack (IPv4-IPv6) or IPv6 multi-homed devices. This paper presents the Address List Extension (ALEX)
Baldi, Mario   +3 more
core   +1 more source

Call Processing Language (CPL) - A Tool for Creation of Internet Telephony Services by the End User

open access: yesCommunications, 2008
Creation and programming new services are considered as crucial for the Internet telephony (IPT). A number of protocols have been defined for IPT, however, one of them - the Session Initiation Protocol (SIP) seems to be the most relevant thanks to its ...
Pavel Segec, Tatiana Kovacikova
doaj   +1 more source

Rqa based approach to detect and prevent ddos attacks in voip networks

open access: yesCybernetics and Information Technologies, 2014
Voice over Internet Protocol (VoIP) is a family of technologies for the transmission of voice over Internet. Voice is converted into digital signals and transmitted as data packets.
Jeyanthi N.   +2 more
doaj   +1 more source

A Robust Mutual Authentication with a Key Agreement Scheme for Session Initiation Protocol

open access: yesApplied Sciences, 2018
Session initiation protocol (SIP) is the most widely used application layer control protocol for creating, modifying, and terminating session processes.
Chien-Ming Chen   +4 more
doaj   +1 more source

A novel mechanism for anonymizing Global System for Mobile Communications calls using a resource-based Session Initiation Protocol community network [PDF]

open access: yes, 2015
Considering the widespread adoption of smartphones in mobile communications and the well-established resource sharing use in the networking community, we present a novel mechanism to achieve anonymity in the Global System for Mobile Communications (GSM).
Acquisti   +15 more
core   +1 more source

NAT Traversing Solutions for SIP Applications

open access: yesEURASIP Journal on Wireless Communications and Networking, 2008
Session Initiation Protocol (SIP) has been proposed for multimedia services and wide-area connectivity in smart home environments (SHEs). An important issue for SIP deployment in SHEs is network address translator (NAT) traversing.
Han-Chieh Chao   +2 more
doaj   +2 more sources

A Machine Learning Approach for Prediction of Signaling SIP Dialogs

open access: yesIEEE Access, 2021
In this paper, we propose a machine learning methodology for prediction of signaling sessions established with the Session Initiation Protocol (SIP). Given the increasing importance of predicting and detecting abnormal sequences of SIP messages to avoid ...
Diogo Pereira   +2 more
doaj   +1 more source

A lightweight privacy preserving authenticated key agreement protocol for SIP-based VoIP [PDF]

open access: yes, 2016
Session Initiation Protocol (SIP) is an essential part of most Voice over Internet Protocol (VoIP) architecture. Although SIP provides attractive features, it is exposed to various security threats, and so an efficient and secure authentication scheme is
Tang, Shanyu   +2 more
core   +1 more source

A Mechanically Proved and an Incremental Development of the Session Initiation Protocol INVITE Transaction

open access: yesJournal of Computer Networks and Communications, 2014
The Session Initiation Protocol (SIP) is an application layer signaling protocol used to create, manage, and terminate sessions in an IP based network. SIP is considered as a transactional protocol.
Rajaa Filali, Mohamed Bouhdadi
doaj   +1 more source

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