SmartNode 4630

SmartNode 4630 is a multiport ISDN BRI device from SmartNode VoIP family. It is available with 3 or 5 BRI/So port configurations, what is perfectly suitable for small and medium sized enterprises, looking for an inexpensive way to get connected to VoIP telephony services or to connect several remote offices in one network.

Additional BRI port solves many problems during integration to the VoIP network. This port can synchronize gateway and ensure errorless data and fax transfer via ISDN. With its support for line failures, port enables integration of an ISDN emergency terminal powered from the public ISDN.
4630 VoIP gateway ensures IP security features and full access routing. You can use the SmartNode as access router or CPE via broadband access, and can also get advantage from Quality of Service features that ensure an unmatched quality of voice by any gateway or IP-phone existing on the market.
SmartNode 4630 can be a wise solution for service providers or system integrators, who need VoIP product with ISDN standard characteristics and quality. Device ensures transparent integration, reliability and inexpensive installation into existing environment.

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SDP Protocols Are Used To Transmit Media Session Information

In 1998, the Internet Engineering Task Force (IETF) published the specification for a Session Description Protocol or SDP as a format that describes parameters for streaming media. The original IETF Proposed Standard was updated in 2006 as RFC 4566. Although the SDP was created as a feature of Session Announcement Protocol (SAP), it can be used with Real-time Transport Protocol, Real-time Streaming Protocol (RTSP), and Session Initiation Protocol, as well as a standalone protocol. Parameter negotiation, session announcement and session invitation are included in the descriptive sessions from the SDP protocol. Rather than transmit data like other types of protocols, an SDP negotiates between media type endpoints, format and properties involved. A session begins when a connection is established, and the session is terminated only after every endpoint is no longer participating.

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