softphone sip

Haha. I 've talked about some SIP application scenarios. I will write some theoretical and boring things in the future. Before that, let's continue to make it easy to tell you a story about how to learn HTTP. At the very beginning, I took an HTTP book first. In short, it was a brick book. After reading the two chapters, we found that we should use the knowledge of TCP/IP. So let's look at TCP network programming. Two months later, I still don't kno

After OS X upgrades to El Capitan, it provides a security-related pattern called SIP (System Integrity Protection), also known as rootless mode, which is a new feature that emphasizes security for OS X, which prohibits the software from being used as root in Mac running on, upgrade to OS X 10.11 Maybe you'll see some apps are disabled so that/usr/bin folders we can't read and write properly, but it also causes some programs (such as homebrew and Git)

The Cisco SIP VoIP architecture solution provides users with many services. The table lists various IP telephone services that can be implemented by Cisco SIP VoIP Architecture solutions.Cisco SIP VoIP architecture solution ComponentsThe Cisco SIP VoIP architecture solution consists of the following elements:Sip ip tel

The SIP protocol and some of its applications are worth learning. In this regard, we will explain the configuration of rtp sip today. SIP (Session Initiation Protocol) is usually used for VOIP calls, call establishment, call negotiation, and call termination. it helps two terminals to recognize each other, but it does not process media. When A call is established

former scenario usually involves early media, such as Ring-Back Tone (the music you hear when calling a person subscribed to this service) or interworking with PSTN. the later scenario may involve resource reservation. these scenarios, by definition, require setting and changing the media properties as the call begins, and this forces sip to take a complex path to support them. The following flow demonstrates a complex invite scenario. For clarity pu

Processing of FreeSWITCH SIP signaling in Mod_sofiaFirst, a thread that handles SIP messages is created inside the module's load (mod_sofia_load): /* Start one message thread /switch_log_printf (Switch_channel_log, Switch_log_info, "starting initial message Thread.\n "); Sofia_msg_thread_start (0); The Config_sofia function is then called. if (Config_sofia (Sofia_config_load, NULL)!= switch

Label:Recently studied asterisk configuration, before the SIP account is configured in the sip.conf file, manual writing dead, the current demand, is the dynamic new SIP account, saved in the database.After adding data to the database, use the command SIP show users to not load the SIP account to the database.1. Downlo

Practice. It is not enough to know some knowledge. You need to practice it first. Now we have learned about the SIP protocol. Here we will share the practice process of a netizen's sip invite. I hope it will be useful to everyone. Request sent by linphone in sip invite (reguest) INVITEsip:to@192.168.105.14SIP/2.0 Via:SIP/2.0/UDP192.168.105.5:5060;rport;br

Research on ice-based sip signaling penetration over symmetric NAT technology Zeng Li, Wu Ping, Gao Wanlin, Wu wenjuan (Department of Computer Science and Technology, Agricultural University of China, Beijing 100083, China) 2 (School of information, Renmin University of China, Beijing 100872, China) Abstract what is one of the practical difficulties faced by IP-based speech, Data, video, and other services in the NGN network?Effectively Penetrate vari

Chapter 1 SIPP IntroductionSIPP is a tool software used to test the performance of the SIP protocol. This is a GPL open source software. It contains some basic sipstone user proxy workflows (UAC and UAS) and can be used to create and release multiple calls using invite and B ye. It can also read the XML scenario file, that is, the configuration file that describes any performance tests. It dynamically displays test running statistics (call rate, back-

First, let's take a look at my sip. conf file, as shown below: [201] User= 201 Type = friend Secret = 1234 Host = dynamic Context = incoming [202] User= 202 Type = friend Secret = 1234 Host = dynamic Context = incoming [1234] User= 1234 Type = friend Secret = 1234 Host = dynamic Context = incoming [0] User = 0 Type = friend Secret = 1234 Host = dynamic Context = incoming [1] User = 1 Type = friend Secret = 1234 Host

In many cases, the SIP does not go directly to the target host, but goes through many intermediate node servers. In the request message, the Via header field indicates the nodes that have passed through (each node passes through, add a via header). In the response message, the via header field indicates the node that the message will go through next (each time the request is returned from the original path, a via header is deleted from each node ). T

Prack English translation (the provisional Response acknowledgement), you can call IT security information! This compares the image.The final response in the SIP is understood to be reliably transmitted, such as a 200OK response to the invite, and UAC will give an ACK telling UAS that it has received 200OK. The reliability between 200 and ACK is end-to-end. Prack is a mechanism for guaranteeing the reliable transmission of temporary messages (101-199)

In PPC development, you sometimes need to hide the sip. There are many ways to hide the SIP in Windows Mobile 5.0. The following are several methods: 1. shsippreference (m_hwnd, sip_down ); 2. sipinfo Si; Memset ( Si, sizeof (SI )); Shsipinfo (spi_getsipinfo, 0, Si, 0 ); Si. fdwflags = ~ Sipf_on; Shsipinfo (spi_setsipinfo, 0, Si, 0 ); 3. shfullscreen (hdlg, shfs_showtaskbar, shfs_hidesipbutton );

HTTP Authentication SIP provides a stateless, trial-and-error mechanism for the authentication system. This mechanism is based on HTTP authentication. At any time, the proxy server or UA receives a request (except in section 22.1), which attempts to check the identity confirmation provided by the request initiator. When the sender confirms the identity, the request recipient should confirm whether the user has been authenticated. In this document, it

SIP is one of the most important protocols in VoIP services. For this protocol, we have discussed some basic content related to it in some previous articles. We will not go into detail here. The focus today is to explain the knowledge about the SIP routing mechanism. In general, the SIP routing mechanism includes two scenarios: 1. Request message routing 2. Respo

Developed for SIP/IMS video clients, supports access to sip Softswitch, IMS core network, andVoice, video, and instant messaging functions. The video formats support h263, h264, and MPEG4 soft encoding solutions. The hardware coding/decoding interface is provided for interconnection and servers. If you are interested, contact me. Implements standard-based (SIP

In the process of building PYQT I met a very disgusting problem, in the installation of SIP after compiling the source of the installation process has been prompted me: Operation not permitted , I even reinstall the system is useless, and finally through the data to solve the problem. Installing SIPDownload the SIP source package after extracting it into its directory:python configure.pysudo makesudo m

SIP Redirect The SIP Redirect feature allows the IMG to respond to the 3xx class of SIP messages returned from a Redirect server. The 3XX responses provide information about a user ' s new location, or alternative services that is able to satisfy the Call. This feature was based on RFCs 3261 section 8.1.3.4 and RFC 2543. In a

I began to study the VOIP/SIP agreement from 09, open source project also saw a few, the earliest Pjsip 05 began to push the time, began to pay attention to, also in their own winmobile project used. Later also saw Sipdroid,imsdroid (Doubango), Linphone,csipsimple (PJSIP).I think the best advantage of Linphone and Csipsimple,linphone is the full platform support, Android,ios,winphone,windows,linux,mac osx,web all support, but the quality is still unde