in this paper, analysis and simulation of media gateway controller (megaco) based cops (common open policy server) which is a protocol defined in ietf (internet engineering task force) to transport configuration requests and deliver the policies is presented. for this scenario, three queuing models include m/m/1, m/m/c and m/d/c were applied . then, some of the key performance benchmarks look l...

This document specifies how to establish secure connection-oriented media transport sessions over the Transport Layer Security (TLS) protocol using the Session Description Protocol (SDP). It defines a new SDP protocol identifier, ’TCP/TLS’. It also defines the syntax and semantics for an SDP ’fingerprint’ attribute that identifies the certificate that will be presented for the TLS session. This...

In the context of a reconfigurable transport protocol framework, we propose a QoS-aware Transport Protocol (QSTP), specifically designed to operate over QoSenabled networks with bandwidth guarantee. QSTP combines QoS-aware TFRC congestion control mechanism, which takes into account the network-level bandwidth reservations, with a Selective ACKnowledgment (SACK) mechanism in order to provide a Q...

Typical transmission control protocol (TCP) based web agents in mobile wireless environment have several deficiencies, such as performance degradation, head-of-line blocking, and unsupported mobility. The Stream Control Transmission Protocol (SCTP) is a new transport protocol, which provides multi-streaming and multi-homing features. SCTP extensions for dynamic address reconfiguration will supp...

Audio streams have always been seen as a kind of network application that don’t care about the packet loss or data integrity. In the same way, it always appears as a latency-sensitive application. However, different scenarios may be mapped from different uses of these resource onto a network data distribution. Although many applications are using UDP protocol, there are some possibilities of tr...

This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Abstract This memo describes a scheme to packetize an H.261 v...

In order to allow programmers to follow conventional techniques while creating applications that uses an internet, software in the internet must provide the same semantics as a conventional computer system, it means it must guarantee reliable communication. Transport protocol provides reliability, which is fundamental for all the applications. The transmission Control protocol (TCP) is the tran...

The Stream Control Transmission Protocol (SCTP) is a new general-purpose transport layer protocol developed by the IETF. Compared with TCP, SCTP has two distinct features: multi-homing and multi-stream. Our work investigates the SCTP performance in various network environments, and its availability for different applications. This paper proposes a SCTP multi-homing scheme as the transport layer...

Many multimedia conference initiation and control protocols like the Session Invitation Protocol or ITU-T H.323 are likely to coexist on the Internet. Although these protocols have di erent invitation schemes and di erent addressing mechanisms, they all need transport addresses to send conference calls. Considering users mobility, address redirection mechanisms were built into invitation protoc...

Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Abstract This memo defines a method for f...