BroadTel International Limited Hong Kong

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General office

BroadTel International Limited
69-71 King Yip Street
Kwun Tong

Hong Kong

Phone: +852-250 86917
Site: http://www.broad-tel.com

Hardware
International VoIP Wholesale Provider
Internet Telephony Service Provider
Internet VoIP and Video Conferencing Service Provider
Voip Termination ISP

Call Relay VoIP Solutions
Call Routing VoIP Solutions
E1 Bulk Wholeseller
Fax To Fax
H.323 Softswitch & CPE
H.323 VoIP Gateway
H.323 Wireless/ GSM VoIP Solutions
Installation and Support Services
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

Proprietary

Carriernet.net

VoIP Express Ltd

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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