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For multi-user communications, there are also common protocols for standardized management, such as the previously mentioned SDP and SIP (Session initiation Protocol), which is a control protocol belonging to the application layer, primarily used to create, modify, and abort sessions between one or more participants ( Sessions). The types of sessions include IP telephony, multimedia streaming, and multimedia conferencing.SIP IntroductionSIP invitation

1 Introduction SIPSession Initiation Protocol, Session Initiation Protocol), SAPSession Announcement Protocol, Session notification Protocol), SDPSession Description Protocol, Session Description Protocol) are three sessions) related RFC protocols are connected and differentiated. In this article, we will make a simple analysis of the three protocols and provide a multimedia application that has some practical value to achieve with these three protocols. 2 protocol analysis 2.1 introduction and

SIP is a tool for generating C + + interface code for Python, similar to SWIG, but using a different interface format. The idea originated in Swig, primarily to create the QT package for Python, which was used to create PyQt and Pykde , and to support the QT Signal/slot system. This article mainly introduces the compilation and installation of SIP and the birth of C + + code into Python under the window pla

Let's talk about the "things" Of The osx sip mechanism"I. Preface OSX is an exclusive operating system developed by Apple for Mac products. It is the first FreeBSD-based system to adopt an object-oriented operating system. From the OSX V10.0-V10.8 version, OSX systems are all codenamed big cats, maybe old Joe is also a fan of cats (I am also a loyal fan of cats, haha ), the OSX system is evolved as follows: 2001Mac OSX 10.0 Cheeta Cheetah 2001Mac O

Session Initiation Protocol,sip is a signaling protocol that establishes, modifies, and terminates a session between two endpoints. SIP can be used to establish a multicast session for two-party calls, multiparty calls, or even Internet calls, multimedia calls, and multimedia distribution. The JSR 116:sip Servlet API is a server-side interface that describes cont

RTP/RTCP/RTSP/SIP/SDP relationship1. RTPReal-time Transport Protocol is a Transport layer protocol for multimedia traffic on the Internet. The RTP protocol details the standard packet format for transmitting audio and video over the Internet. RTP protocols are commonly used in streaming media systems (with the RTCP protocol), video conferencing and a Push-to-talk system (with either a/p or SIP), making it t

This article is from csdn lidp and reposted the famous source. Thank you. For information and technology trends in the VoIP industry, see www.voip123.cn. For the registration function, Asterisk SIP protocol stack provides two services, 1. Asterisk is used as the SIP client and registered with other sip servers.2. Asterisk is used as the

1.1 SIP Message Classification SIP protocol is formed in the form of layer protocol, that is, its behavior is described in a set of relatively independent processing stages, the relationship between each phase is not very close. The SIP protocol divides the messages between the server and the user agent into two categories: the request message and the response me

There are many tools used in Python in the swig (in English meaning: booze), sip (in English), and Boost.python. SIP is developed from Swig, and is specifically designed for Python to call C + + modules (see SIP naming to see, very interesting).SIP usage, in the official website of the

The SIP protocol is an application-layer control protocol used to establish, modify, and terminate multimedia sessions. It draws a lot from mature HTTP protocols (such as text format encoding and method in request messages ), the text-based UTF-8 encoding method can be used to carry the UDP or TCP protocol (UDP preferred ). Similar to the Diameter protocol, SIP also has a basic protocol and many extension p

A technology, especially network-centric and communication-centric technology, has its own transmission protocol. Now we will introduce some knowledge about Cisco Unified Communication Protocols. So what is SIP when Cisco's unified communication protocol is used? Why is it used? Support for the SIP protocol in Cisco Unified CommunicationThe SIP Protocol provides

Sip nat/FW Default font9pt10pt11pt12pt13pt14pt15pt16pt17pt18pt20pt25pt30pt35pt40pt45pt50pt Basic Principles of NAT and FirewallFirst, there are several Nat methods: Full Cone: when a private network host sends a packet to the public network, its local address and port are {A: B}, Nat will set its private address {: b} convert to public address {X: y} and bind it. Any package can be sent to the host's {A: B} address through the address {X: y}. Nat w

Rfc3261 Chinese translation [version D] Parallel search: Parallel search. In parallel search, a proxy server sends multiple requests to a possible user location to receive the request response. Serial search: waits for the final response of the previous request before sending the next request. Different from serial search, parallel search sends multiple requests without waiting for the results of previous requests. Provisional response: temporary response. The server is used to indicate the prog

"swatchmate cube" in smart devices that appeared in 2014 was definitely a surprise to me. As a portable color detection device, it can capture the colors from any object surface, helping users to easily capture these colors. If the cube is reliable, the designer will be able to capture all the wonderful colours of nature through it. So it has become one of the first devices I want to start this year. But the cube is not listed, obviously it is not the protagonist I want to introduce

1.1.1. Route/record-route ? Record-route can be used: -Ensures firewall proxy stays in Path ? A firewall proxy adds record-Route Header -Clients and servers copy record-route and put in Route Header for all messages Request Routing Example: only proxy 3 remains in route 1. ua1 is being ucted to invite "SIP: ua2 @ proxy1" 2. The message shocould be sent to proxy 1 3. The message shocould be sent to proxy 2 4. The message shocould be sent to proxy

In the process of establishing a session, we must apply it to the SIP protocol. Some friends may not understand this agreement. It doesn't matter. Here we will explain the content of this Protocol. You may be familiar with the SIP protocol. The Session Initialization Protocol is an application layer control protocol. So what are more specific functions and applications? It can be used to create, modify, or

I. background and functions of the SIP protocolSIP (Session Initiation Protocol) is developed to help provide advanced telephone services that span the internet. Internet telephone IP telephone) is evolving to a formal business telephone model, and SIP is an important member of the series of protocols to ensure the implementation of this evolution.SIP is part of the IETF standard process. It is built based

Today the work encountered two devices between the SIP packet crawl and analysis, and then combined with the RFC3261 document description, recorded today understand.1.SIP Protocol:Detailed RFC documentation for SIP is visible: rfc3261Session initiation, which allows you to use Internet endpoints (user agents) to find participants and allow you to create a shareab

Today, I encountered the capture and analysis of the SIP packets between the two devices. Then, combined with the instructions in rfc3261 documents, I recorded what I understood today. 1. SIP protocol:The detailed RFC documentation for SIP can be found at: rfc3261Session Initiation (Session Initiation Protocol) allows the use of internet endpoints (User proxies