http://blog.csdn.net/noiile/article/details/115436
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
In the process of building PYQT I met a very disgusting problem, in the installation of the SIP after compiling the source code after the installation process has been prompted me: Operation not permitted , I even reinstall the system is useless, finally through the data to overcome the problem.
Installing SIPDownload the SIP source code package after extracting it into its folder:python configure
I. SIP Concept
Session Initiation Protocol (SIP) is an application-layer control Protocol used to establish, modify, and terminate multimedia sessions. sessions can be IP phones, multimedia distribution, and multimedia meetings. It is the core protocol of the IETF multimedia data and control architecture (RFC3261 is the latest RFC document ). The main purpose is to solve the signaling control in the IP netw
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 (
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
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
The SIP Protocol provides a standard-based IP communication method for multiple devices and applications. This White Paper describes the support for the SIP protocol in the Cisco communications system. Cisco's Unified Communication System includes IP voice, data and video communication products and applications, which can help organizations communicate more effectively, simplify business processes, and achi
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
Tags: blog http os ar using file data on artOriginal: Asterisk real-time add SIP number--sqliteAsterisk real-time add SIP number--sqliteToday, I tried to use Asterisk's real-time mode to add a SIP account to SQLite without restartingAsterisk, no need to reload, you can successfully register a SIP account, the following
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
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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
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
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
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
Introduction
1. About the SIP protocol
Currently, there are three basic communication protocols based on VOIP: H 323, SIP, and MGCP. The following describes the comparison between the H 323 protocol and the SIP protocol.
H.323 was proposed by ITU. It attempts to regard IP phones as well-known traditional phones, but the transmission mode is changed from circuit s
Create a list
If you are developing an application using the sip api, remember that this function is only supported in Versions later than Android (API level 9. In addition, not all devices running Versions later than Android (API level 9) provide SIP support.
Add the following permissions to your application list to use the SIP
1. Android. Permission. use_sip
2.
The use of the SIP protocol is not uncommon. With the popularity of the VoIP service, we also have a better understanding of the SIP protocol. Here we will focus on the advantages of SIP. In this case, we need to compare this advantage with other protocols.
Advantages of SIP:
Service providers can select standard compo
We also talked about the SIP Protocol and related SIP protocol stack. In this paper, we propose a software structure and design implementation scheme of the software telephone based on the SIP protocol. this solution is based on the embedded Windows CE platform. The middleware uses the Open-Source SIP protocol stack oS
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