4DVision, LLC United States

4DVISION is a privately held Colorado company. Established in 1995 4DVISION has evolved from a software development company into a Internet Service Provider. 4DVISION is committed to providing excellent services at a reasonable price.4DVISION is focused on quality of service and uptime exclusively. Our clients are the primary marketing vehicle for our company which means we have to provide the highest level of service.Using cutting edge technology and automation 4DVISION is the Internet Service Provider of the future

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General office

4DVision, LLC
9674 E. Arapahoe Rd. PMB 202
Englewood
CO ,80112-3757
United States

Phone: +1 720-290-7203
Phone: +1 720-290-7203
Site: http://www.4dv.net

Internet Telephony Service Provider
Voip Termination ISP
Network Service Provider
Voip consulting

Phone To Phone
Phone To PC
Fax To Fax
Web To Phone
Partnering for Origination and Termination
Project Mangement Services
System Integration
Installation and Support Services

Cisco Systems

Java Based own system

BtN Access

Communique8 LLC

Providers in database: 6433

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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DBL Technology Limited

DBL Technology Ltd. is a leading company in developing and manufacturing advanced voice over IP (VoIP) solutions for the worldwide market. We are dedicated in the development of the latest VoIP technologies, and more than 10 years in developing a wide ra