With the development of the network, VoIP services and unified communication platforms become more and more important. The SIP protocol is an exciting focus. Some may ask, what is the SIP protocol? What's better about it? Here we will go into more details.
The Chinese meaning of the SIP protocol is the process initialization protocol. The existence of the
I believe that you have mastered the basics of IMS and SIP protocols and some precautions. These contents are also described in two articles, "briefly describing the SIP protocol in IMS" and "Problems Existing in IMS and SIP. Next we will explain the SIP Protocol extensions in IMS.
1.
Chapter 7 Registration
Section 1 Overview
SIP provides a capability to discover users. If a user wants to enable a session with another user, the SIP must be able to discover the current host of the target user. This discovery process is often used by SIP network elements, such as proxy servers or redirection servers. These servers can receive a request and detec
Abstract sip, sap, and SDP are important protocols involved in NGN and 3tnet. Based on introduction and analysis of SIP, sap, and SDP protocols, this paper provides a multimedia conference application instance based on the combination of the three protocols.
Key words: SIP sap SDP
1 Introduction
Session Initiation Protocol (
What are the problems with SIP from private network to public network?
Address translation of the package.
SIP address Translation inside the SIP message.
The RTP address translation in the SDP inside the SIP message.
The existing structure of the network is complex, SIP s
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
Transferred from Http://www.ring180.com/sip/28-pstn-interworking/59-sipThursday January 2009 03:46 Sharp Voice Communication
1 , early media
Whether in the PSTN or VoIP network, the final purpose of a call is to have two users talk (conversation). Here we will be generated by conversations between the users of the media called the regular media ("regular medium").
Early media ("Early media") is compared to conventional media.
Typically, the user's co
This article, the original connection: http://blog.csdn.net/freewebsys/article/details/46546205, reprint please indicate the source!1, about FreeSWITCHFreeSWITCH is a soft-switching solution for telephony, including a softphone and soft switch to provide voice and chat product drivers. The FreeSWITCH can be used as a switch engine, PBX, multimedia gateway, and multimedia server.FreeSWITCH supports a variety of communication technology standards, including SI
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
Previously, we handled some application problems related to the SIP Session Initiation Protocol. Many solutions are summarized. I wonder if you have mastered it. See Basic Q A of the SIP Session Initiation Protocol. Let's add more content in this article.
Is X standard supported?
We have implemented and tested a large number of standards. We listed these standards in the Product Information Center (see ref
Open source of SIP applications (proxy, PBX ,...)
SIP Express Router (SER): Highspeed GNU sip proxy with a lot of features and a lot of ongoing development. homepage:Http://www.iptel.org/ser/. A really cool sip proxy-I like it! You can also take a look atDevelopment HomepageWith Web CVS. At the beginning you shoshoul
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
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
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
With the rise and development of information services and applications, the data traffic on IP networks is growing rapidly. Data Services must follow certain protocols. Currently, H323, SIP, and MGCP are mostly used. These protocols have their own characteristics and have been promoted to a certain extent. This article explores how to interwork between SIP and MGCP.
Logical Structure
Figu
IntroducedThis article is a reference guide for SIP4.18. SIP is a python tool used to automatically generate Python bindings to C/C + + libraries. SIP was originally developed in 1998 with PYQT for Python and QT GUI Toolkit, but is suitable for generating bindings for any C or C + + libraries.This version of the SIP-generated bindings is available for Python vers
Kamailio is an open-source SIP server, formerly known as openser.
Kamailio is an open source, gpl2, SIP Server Routing platform. It is written in C for Linux/Unix plaforms and focuses on performance, flexibility and security.
On Nov 04,200 8, kamailio and SIP Express Router have started the SIP router project.
Web Link
BICC vs sip-Comparison of NGN Protocol
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One notable feature of the Next Generation Network Based on Softswitch is the separation of Call Control and bearer control. In terms of call and control of communication, from the Standard Research of the International Telecommunication Union (ITU-T) and Internet Engineering Task Group (IETF), there are two protocols that deserve
Sip nat/FW
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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
Abstract:
IP
MultimediaSubsystem (
IMSThe user plane, control plane, and business plane are separated to facilitate the provision of services to users. This article will focus on analysis
SIPApplication
Server(SIP as) Issues related to the IMS service provision process, including the general process, billing functions at the business layer, and technical difficulties provided by the Service, analytics is based on a specific service (Message Service) p
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