Derwood Communications Pty Limited Australia

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General office

Derwood Communications Pty Limited
15 Statton Street
Gowrie
ACT ,2904
Australia

Phone: +61 (0)2 61007114
Phone: +61 (0)3 90141363
Site: http://www.derwood.com.au

Contact Person

Darren Crick / Director
Phone: +61 (0)2 6100 7114
Phone: +61 (0)418 202907

Hardware
Internet Telephony Service Provider
Voip consulting

Consultancy Services
Installation and Support Services
IP devices
PC to Phone
Phone To PC
Phone To Phone

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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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