Quadrilandia, Lda. Portugal

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General office

Quadrilandia, Lda.
Apartado 55022, EC Galiza
Porto
,4051-401
Portugal

Phone: 351226095121
Site: http://www.quadrilandia.pt/

Hardware
Hosted VoIP billing service provider
International VoIP Wholesale Provider
Internet Telephony Service Provider
SIP Billing
VoIP Billing Software Provider
Voip consulting

Billing Software
Call Routing VoIP Solutions
Consultancy Services
H.323 Softswitch & CPE
H.323 VoIP Gateway
H.323 Wireless/ GSM VoIP Solutions
Installation and Support Services
IP devices
Partnering for Origination and Termination
PC to Phone
Phone To PC
Phone To Phone
SIP Softswitch & CPE
SIP VoIP Gateway
System Integration
Termination
Web Call
Web To Phone

Cisco Systems
Mera
Quintum

C.A.TELECOM Sistemas de Telecomunicações Lda

StarTel

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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Interchange Connexions Ltd

Interchange Connexions is part of Interchange Group, a leading provider of Technology/Carrier Solutions for over 28 years. Interchange Connexions is a Next Generation Global telecommunications service provider offering wholesale and retail services to a