C.A.TELECOM Sistemas de Telecomunicações Lda Portugal

WebPhone, a provider of voice over Internet Protocol (VoIP) technology, was founded in 2002. WebPhone provides PC2Phone calling service using a worldwide VoIP network. The company is based in Portugal and recently opened sales and customer service offices WebPhone, a provider of voice over Internet Protocol (VoIP) technology, was founded in 2007. WebPhone provides PC2Phone calling service using a worldwide VoIP network. The company is based in Portugal and recently opened sales and customer service offices in the United States of America. WebPhone routes a call from your computer over the Internet and terminates the call on a standard telephone using state of the art VoIP technology. The result is high-quality VoIP calls to any phone in the world. By routing the calls over the Internet, WebPhone incurs lower costs than a standard telephone company and is able to pass the cost savings along to you, . The WebPhone service features an online account center for all of your account management needs and an easy-to-use software program, which is free to download.

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General office

C.A.TELECOM Sistemas de Telecomunicações Lda
Rua São Francisco nº 6 A
Elvas
Alentejo ,7350-425
Portugal

Phone: +351 268623225
Site: http://www.catelecom.pt

Contact Person

Carlos Gago / Eng.
Phone: +351 268623225 Opção

Hosted PBX Service Provider
Hosted VoIP billing service provider
International VoIP Wholesale Provider
Internet Fax Service Provider
Internet Telephony Service Provider
Mobile VoIP
Network Service Provider
SIP Billing
VoIP Billing Software Provider
Voip consulting
Voip Termination ISP
Wholesale VoIP Carrier
Wireless Broadband

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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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