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Radware introduces Layer 4-7 VoIP support for enterprises and carriers

Radware Ltd. announced today that it has added Session Initiation Protocol (SIP) support to its WSD product line.


July 18, 2005  


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Radware Ltd. announced today that it has added Session Initiation Protocol (SIP) support to its WSD product line.

SIP is an international standard for a signaling protocol used for establishing sessions between two or more end users. The user sessions involve multimedia elements such as voice, chat, gaming and video.

SIP allows applications and devices created by multiple vendors to interoperate with each other. It is also used to establish, maintain and terminate multimedia sessions, including telephony, video, and other types of
communication.

Radware WSD monitors the health of SIP servers. When a SIP server is detected to be down, due to failure or for maintenance, WSD automatically switches to other available SIP servers.

By maintaining persistency of SIP sessions, it ensures that all the signaling packets of the same call are sent to the same SIP server — critical function for accounting or billing sessions because it ensures the accurate billing of VoIP services.

WSD also provides protection against Denial of Service attacks that are often a main impediment to Voice over IP installations.