Original text from ATAC, no web connection. SIP, the Session Initiation Protocol, is a signaling protocol developed by the Internet Engineering Task Force (IETF) to allow interactive user sessions involving multimedia elements (such as voice, video, and instant messaging). SIP is currently the basic signaling and call setup Protocol for ip Telephony, And Sip Applications Are The Basic Way To Provide Voice and Other MultiMedia Services over ip.
SIP, Session Initiation Protocol, is a signaling protocol made by IETF, for multimedia communication, such as voice, video, and instant messaging, etc. SIP is the current IP phone's session establishment and signaling control of the IP phone, and SIP applications are the basic ways to implement multiple multimedia applications such as IP networks.
SIP Servlet (JSR-116), developed through the Java Community Process (see www.jcp.org), is an open standard API that describes server-side component interfaces for application development. Derived from the popular Java Servlet architecture of J2EE, it BRINGS Internet Application Development Capabilities to the building of sip solution.
SIP Servlet (JSR 116) is an Open Standard API for a development server-side SIP application defined by Java Community Process. The SIP Servlet is based on the Java Servlet architecture in the current popular J2EE. It takes the development mode of the Internet application to the SIP solution.
In the component-container architecture defined by SIP Servlet, a SIP application is a component that runs inside and is managed by the Servlet container or application server. By leveraging the services provided by the container, SIP application developers only need to handle high-level Business Logic, Thus Simplifying Their Work Significant.
The SIP Servlet is based on the architecture of components and containers. Each SIP application runs within the container or application server and manages the container or application server. Since the container provides a large number of basic services, the application developers only need to deal with the business logic of the upper layer, thereby significantly simplifying the application development workflow.
The heart of the application server is the SIP protocol stack. The server marshals and unmarshals SIP messages, manages SIP dialogs and transactions, and implements the core SIP semantics. The server then calls the application upon receiving an incoming message. The application, in turn The core of the Calls The Server to Send An Outgoing Message.sip Application Server is the SIP Title. The application server is responsible for accepting and transmitting SIP messages, managing SIP dialogs and transactions, and implementing the core semantics of SIP. When the server receives the message, the corresponding application will be called; the server can also be called in the application to create and send a message.
The Server Also Provides The Following Useful Services:
The application server also provides the following services:
• Application Lifecycle Management: The Server Manages The Application's Lifecycle, Through Stages Such As Configuration, Deployment, Loading, Start, And Shutdown.
Lifecycle Management of Applications: The server is responsible for managing the life cycle of the app, such as configuration, deployment, loading, start, and stop.
• Resource Management: The Server Manages Resources, Such As Threads, Transports, Memory, And Timer.
Resource Management: The server is responsible for managing various public resources, such as threads, network transmission, memory, and timers.
• Security Service: The Server Offers Transport and Message Level Security Functions.
Safety services: Server provides a variety of security management mechanisms such as network transport layers and messages.
• Scalability and high Availability: Many Servers Offer Features Such as Clustering and Failover For High Demand Situations.
Scalability and high reliability: Many servers provide, for example, clusters for high demand conditions or
Failover
Waiting for functions.
• Integration:. The server can run both SIP applications and Web applications This provides easy integration for applications such as a web-based telephone The server also provides additional unified access points to other applications through the Java Naming and Directory Interface..
Integration: The server can run SIP applications and web applications simultaneously, providing a simple way for a variety of applications, such as web-based phones. With JNDI, the server also provides a unified access interface for other applications.
