VoiPortugal Portugal

Telefone através de VOIP para todo o mundo a baixo custo. Fale para telemóvel em Portugal por 3,25 cêntimos. Também com soluções e tarifários para empresas

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General office

VoiPortugal
Lisboa
Lisboa
,1050
Portugal

Phone: +351302017366
Phone: +351302077366
Site: http://www.voiportugal.com

Contact Person

Fernando Maia / Owner
Phone: +351302017366
Phone: +351919554579

A-Z Termination
Internet Telephony Service Provider
Internet VoIP and Video Conferencing Service Provider
Marketing Services
Mobile VoIP
Voip consulting

PC to Phone, Phone To PC, Phone To Phone, Project Mangement Services, Termination, Web Call, Web To Phone

grandstream

Not data

VoIP Providers in Portugal

VoipUnify Telecom

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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General Telephone & Telegraph Ltd

General Telephone & Telegraph is a Telecommunications Solutions Provider. We work with companies to make sure that they have the best telecommunications systems that they need to operate their business effectively for both their employees and their custom