SIP proxy


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SIP proxy

(Session Initiation Protocol proxy) A proxy server that allows SIP-based telephony packets to traverse the network's firewall. The SIP proxy takes over call control and provides address translation in order to direct calls to the appropriate phones within the network. Deployed in companies with many SIP phones, a SIP proxy offers a very comprehensive solution for enterprises. For example, it supports authentication, encryption, telecommuters and can even serve as backup for the PBX.

Stateless Vs. Stateful
A stateless SIP proxy establishes the connection and gets out of the way. A stateful SIP proxy keeps track of the call and supports more sophisticated functions such as call routing and caller filtering. See SIP ALG, SIP and proxy server.
References in periodicals archive ?
In the proposed SeSIP, SIP is the main protocol to manage the session between MN, SIP-NVG, SIP Proxy 1, SIP Proxy 2, and CN.
Statistical features of time intervals between SIP signalling messages arriving to SIP Proxy server (SIP PS) moments obtained during the experiment are presented in this work.
When an SIP proxy server receives a request message related to a call-disruption attack, it sends an Ext-INFO request to the UA that sent the message.
Nasdaq: ININ), a global provider of unified IP business communications software and services, has released Interaction Edge([TM]), acombined gateway, media server, and SIP proxy appliance designed to streamline enterprise IP telephony deployments.
com)-- SoliCall, a leading provider of software for noise reduction, echo cancellation and audio quality improvement, announced today that it has added support for integrating the PBXMate as a 100% transparent Sip Proxy.
The SIP user agent (UA) transmits an INVITE request message to the receiver UA in order to create a session via the SIP proxy servers.
1 provides stateful monitoring of voice calls, alongside an integrated SIP proxy, enabling VoIP security issues to be resolved.
The SIP proxy automatically brings servers back into use when they become available.
By intelligently distributing SIP traffic among multiple SIP proxy servers, BIG-IP enhances the performance and availability of dynamicsoft's solution, providing carrier-class uptime (99.
Vintalk is now able to take advantage of the integrated SIP Proxy Server on our call servers (50/100/300) and enable SIP functionality seamlessly and without any trunking licenses or additional costs.