sip network

Linux Firewall NAT-SIP network topology, natsip Environment: Firewall: Ubuntu Server 17.10. SIP-Yate client, Asterisk Server Network Topology: 1) configure the IP address of the firewall and enable forwarding: ifconfig enp2s0 192.168.1.131 ifconfig enp3s0 192.168.100.1 echo 1 > /proc/sys/net/ipv4/ip_forward

P2p-sip is a peer-to-peer telephone protocol, and someone wrote a python implementation. This only supports python2,2.6 above PIP installation, or download installation package decompression. After decompression has the readme, chews the English. Write webcaller.py Import gevent, sys from gevent import monkey; Monkey.patch_all () from GEVENT.PYWSGI import wsgiserver to CGI import Parse_qs, escape import logging from logging Impor T config logging.co

Firewallnat In fact, the essence of the light-mouth board is equivalent to NAT device. To achieve NAT penetration, there is no problem with the SIP processing of the optical orifice plate. Firewall is a passive network security defense technology, located at the boundary of the network, executing the access control policy between the two networks, preventing the

servers RFC 3323 A Privacy mechanic for SIP RFC 3324 Short term requirements for Network asserted identity RFC 3325 Private extensions to sip for asserted identity within trusted networks RFC 3326 The reason header field RFC 3327 Extension header field for registering non-adjacen

software for carrier networks. Network equipment suppliers (Nev) are developing hardware that supports sip signaling and services. Currently, many IP phones, user agents, network proxy servers, VOIP gateways, media servers, and application servers are using SIP. SIP uses si

Introduction Communication providers and their partners and users are increasingly eager for a new generation of IP-based services. Now we have the SIP Session Initiation Protocol. SIP was born less than a decade ago in the computer science laboratory. It is the first protocol suitable for multi-user sessions in various media content. Now it has become the specification of the Internet Engineering Task Gro

1. Introduction to the SIP protocol Many applications on the internet need to establish and manage a session. The session here refers to the exchange of data between participants. Considering the actual situation of participants, the implementation of these applications is often very complicated: Participants may move between agents, they may have multiple names, the communication between them may be based on different media (such as text, multimedia,

1 , what is SIPSIP (Session Initiation Protocol) belongs to the IP Application layer protocol, which is used to provide the user with session application on the IP network. A session refers to the communication of voice, video, and other media forms between two or more users, possibly IP telephony, conferencing, instant messaging, and so on.SIP is a signaling protocol that corresponds to a call signaling protocol (such as SS7 ISUP) in a traditional te

Basic SIP Application As one of the main VOIP communication protocols, the SIP protocol is simple, flexible, and open, and is gradually dominant in the VOIP communication field. The main methods used for SIP Communication include SIP terminals, proxy/targeted servers, location servers, and PSTN gateways. Currently, th

(Hypertext Transfer Protocol) defined in RFC 2616-It defines Web-based multimedia communication messages. In addition, SIP uses the RTP/RTCP protocol (Real Time Transport Protocol/real time control protocol) defined in RFC 3550. It defines the multimedia package format on the IP network, also, the Session Description Protocol defined in RFC 2327 is used to define the parameters and features of a multimedia

This tool is a real-time analysis of the SIP Communication Protocol, which is the main function of the Communication Engineering of zhongzheng University. In addition, the distributed design can be used to analyze cross-domain sip packets, draw a complete signaling flowchart, and control the web interface... background in view of the fact that there is no free communication protocol analysis software for th

new devices will be released for technological innovation to provide new methods and addresses for people's connections. In many cases, it is discovered that the convenience of these new devices is greatly reduced by the complexity of managing various addresses, messages and tools with different features, or even overlapping tools. The use of new devices also raises the question of how to contact others in the best way: "should I send an email or send a voice message? Which number should I use

SIP (Session Initiation Protocol) Conversation Initiation Protocol is an application layer control (signaling) protocol for network telephony and conferencing. It is mainly a multimedia communication protocol based on IP network. It can realize the signaling functions are also using RTP as a media transmission protocol. Originally presented by the IETF Mmusic (mu

a conversation that has been established. Because it is a direct concatenation of UAC and UAS, there is no need to have an additional definition for him. Call: Calling, a call is an informal term, which refers to a number of communication behaviors between endpoints, often used to create multimedia conversations. Call Leg: The alias of the dialog, not used in this specification. Call Stateful: If a proxy server (proxy) holds the state of a dialog (from the beginning invite to the bye of the

. Because it is a direct connection between UAC and UAS, there is no need to define it. Call: call. A call is an informal term. It refers to a communication behavior between an endpoint and is usually used to establish a multimedia conversation.Call leg: the alias of the dialog. It is not used in this specification. Call stateful: If a proxy stores the state of a conversation (from the invite at the beginning to the bye at the end of the conversation), the proxy server will have a status request

RTP/RTCP/RTSP/SIP/SDP RelationshipRTP (real-time transport protocol, Transport layer)Real-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

Analysis of SIP route and record_route/SIP Routing Mechanism from: [url] Routing Analysis of SIP Routing Mechanism (zz)We have already introduced sip-related knowledge about important SIP header domains, registration processes, and session processes. Now we will introduce t