sip speakerphone

SIP is an application control signaling protocol proposed by IETF. As the name implies, it is used to initiate a session. It can be used to create, modify, and end multimedia session processes attended by multiple participants. Participants can communicate with each other through multicast, unicast, or network connection.There are clients and servers in the SIP. A client is an application that establishes a

Http://www.cnblogs.com/lovers/articles/2624745.html Background:A task is received to encapsulate the video SDK provided by a manufacturer and connect it to a unified video monitoring platform of a Power Grid Company. The interface protocol proposed by the platform shows the SIP and some interactive packets for the first time. Once again, I deeply feel the lack of knowledge ..... After two days, Google, forums, and blogs have all been used to

The registration process of SIP is easy to understand. First, I have a number, but if my number can be moved, how can the server find me? The SIP registration mechanism reports the location of the SIP terminal to the registration server. The registration server is only a logical role. It is not necessarily an independent physical entity. It can be the same physic

In the process of learning the SIP protocol, we need to be clear about a concept, that is, the concept of SIP relay. In order to help you better understand this aspect, we use a comparison between Chinese and English translations to help you understand this aspect. The specific information is as follows: A sip Trunk is a logical connection between an ip pbx and a

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

The business support environment mainly includes the application server, Business Management Server, and business generation environment. They work together to quickly complete the tasks that provide users with diverse and flexible value-added services based on the next generation network. The application server is the subject of the business support environment. The Business Management Server and business generation environment can be used as part of the application server. Figure 2

Label: style blog HTTP Io color OS ar sp **************************************** **************************************** **************************************** ***Easywave time: 2014.10.30 Category: Linux applications-open-source VoIP-Based on Osip-qutecom Brief Description: reprinted, please keep the link NOTE: If any error occurs, please correct it. These are my Learning Log articles ...... **************************************** **************************************** ***********

The SIP Session Initiation Protocol has been added in many systems. Therefore, we have summarized and summarized some problems of the SIP Session Initiation Protocol, hoping to help you solve some problems. For the sip faq, the Session Initiation Protocol SIP Servlet 1.0 support (JSR 116) was added for the first time i

Chapter 3 SIP messages SIP is a text-based protocol that uses the UTF-8 character set (rfc2279 ). A sip message can be a request sent from a client to a server, or a response sent from a server to a client. Both requests (rfc3261 section 7.1) and responses (rfc3261 section 7.2) are in the format described in rfc2822. However, there are some differences between ch

What is VoIP? The complete name of VoIP is voice over Internet protocol, which is translated as Internet voice. It can be simply understood as a technology that uses an Internet system instead of a traditional telephone communication system for voice calls. In fact, the biggest difference between the two is that traditional voice calls use analog signal technology, which is prone to interference and difficult to avoid signal distortion, the capacity of traditional analog signal communication tec

SIP: Session Initiation ProtocolDocument StatusThis document has developed an Internet standard tracking protocol for Internet communications that asks for discussion and elevation of recommendations. Please refer to the "Official Internet Protocol Standard" for the standardized status of this agreement. Forward Unlimited!Copyright noticeCopyright (c) Internet community (2002). All rights Reserved!ProfileThis document describes the Session Initiation

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

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

Introduction to Open-Source SIP Server OpenSIPS and open-source sipopensips **************************************** **************************************** **************************************** ***Author: EasyWave time: 2014.09.14 Category: Linux application-open source server OpenSIPS introduction statement: reprinted, please keep the link NOTE: If any error occurs, please correct it. These are my Learning Log articles ...... *******************

Linphone BlackBerry and AMR-NB supportHttp://www.linphone.org/eng/linphone/news/linphone-for-blackberry.html Download Source Code here:http://www.linphone.org/eng/download/git.html Download install git for Windows http://msysgit.github.com/command line execute git clone git://git.linphone.org/linphone-blackberry.git-- Recursive Copy directory Linphone-blackberry to the new workspace. Import existing project (copy not selected) Modify the JRE in Java build path from 7 to 7.1 Modify Java

We know that the SIP session process is very important in the SIP Protocol process. Let's take a closer look at the content of requests and replies. We will explain the meanings of some fields sent through the sip invite. SIP INVITE The caller Tesla first initiates the INVITE message to the called party Marconi. The I

----------------------------------------------------------------------------RFC list:3550 (RTP/RTCP)-3711 (SRTP)-5245 (ICE)-3261 (SIP)-4575 (sip-conference)-4566 (SDP)5389 (Stun)-5766 (Turn)-6455 (WebSocket)-6865 (FEC)-2616 (HTTP)----------------------------------------------------------------------------One, RFC 5245 ICE Study Notes---------------------------------------------------------------------------

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