what is sip trunk and what is sip gateway

One. What Ajax is: 1. With asynchronous mode, the user experience is improved by 2. Optimizes the transfer between browser and server, reduces unnecessary data round-trip, and reduces bandwidth consumption by 3. Ajax runs on the client side, assuming some of the work that would otherwise have been done by the server, reducing the load on the server under a large

decoding GPU/VPU has become the main operation.☆ What are the advantages of hard decoding?Many of the old computer friends have this experience, playing high-definition video when the screen will jump frame (just like a slideshow), the sound is intermittent, but after the decoding work to the new graphics card, the CPU can be freed up to do more things, while also reducing the overall power consumption, th

"What is missing in China and what is missing in Japan"--KandoWhat China lacks:1. High-quality service2. A coherent spirit of solidarity3. Delicate technologyWhat Japan lacks:1. Responsibility2. The power of the young3. A broad World VisionChina's enterprises are full of vitality, but the mobility of personnel

does not involve design patterns, architecture, efficiency and other issues. Or Google first, to see what the Web front-end development, Web backend development, respectively. Web front-end: As the name suggests is to do the front-end of the web. What we are talking about here is the front end of the web, where the

must allocate a new page somewhere on the disk, and the new pages and the original physical pages are not contiguous. As a result, Access uses random I/O instead of sequential I/O, which makes accessing index pages slower.So what is the ideal filling factor? It relies on the application's ratio of read and write to SQL Server tables. The first principle, follow the guidance below:Table with low change (rea

What exactly is the callback function ?, What is the callback function? I was confused when I saw the callback function today. I found a lot of Search Engine information, but I did not understand it after reading "c and pointer. Briefly describe what

What is ddns? What is the purpose? How to Use nat123 dynamic domain name resolution ?, Ddnsnat123 What is ddns? What is the purpose? How to

What is this in php? what is this first time? how do I obtain the value ??? Thanks for the data sent from the taobao system. I want to take the value and store it in the database. How can I get the title, num, and share it with php? what

How to abstract a class? Why Abstract classes? What is the role? What is polymorphism? How to achieve polymorphism? How to abstract a class? Why Abstract classes? What is the role? What

is simply preceded by a 2 byte 0. UCS-4 is primarily used to save auxiliary planes, such as the second auxiliary plane in Unicode 4.0 20000-20fff-21000-21fff-22000-22fff-23000-23fff-24000-24fff-25000-25fff-26000-26fff-27000-27fff-28000-28 Fff-29000-29fff-2a000-2afff-2f000-2ffff A total of 16 auxiliary planes were added, extending from the original 65,536 encodings to nearly 1 million encodings. So since t

What is BFC and what is a good wife? BFC DefinitionThe BFC (Block formatting context) literal translation is "Block-level formatting context ". It is a stand-alone rendering area with only Block-level box parameters. It specifies

1. What is a pattern? Patterns, that is, pattern. In fact, is to solve a certain type of problem methodology. You have summed up the method of solving some kind of problem to the theoretical height, that is the pattern. The classic definition given by Alexander

What is a stylus printer? The printing principle of the stylus printer is to print a small dot on the print medium by printing a mechanical impact on the ribbon, which eventually makes up the desired object to be printed. The number of printed needles is the number of pins on the print head of the pointer printer. The

What is a hook? what is the function of hook? everyone knows that almost all php video lectures, including books, do not mention the Hook concept at all. However, it is often used in actual projects, so sometimes I feel that the gap in teaching practice has always been the b

ManagedCode(Managed code ): Code executed by the Common Language Runtime Library environment (rather than directly by the operating system. Managed code application Program You can obtain the Common Language Runtime library service, such as automatic garbage collection, runtime database type check, and security support. These services help provide unified managed code application behavior independent of platform and language. Unmanaged code-unmanaged code : Code directly executed by the opera

Label:ollydbgis a 32-bit assembly-analysis debugger with a visual interface. What makes it special is that it can solve problems without source code, and can handle problems that other compilers cannot solve. Version 1.10is the final release version. This project has been stopped and I am not going to support this software anymore. But don't worry: the newly created ollydbg will soon be available in 2.00! o

Java Learning -- What is JNDI and java what is jndi I once remembered that when I was working on the data center charging system, I came into contact with the API. Because of its powerful functions, I didn't know much about it, so I was so worried. Now, we can see that it is