CallExchange United States

CallExchange provides companies looking to enter the retail telecommunications business a turnkey solution to rapidly and cheaply deploy prepaid and postpaid calling cards and accounts, as well as VoIP softphones and customer premise equipment.

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General office

CallExchange
666 fifth Ave #379
New York
NY ,10103
United States

Phone: +1 212-785-7233
Phone: +1 212-785-7233
Site: http://www.callexchange.net

Contact Person

Rony Gilad / CEO
Phone: +1 212-785-7233

Hosted VoIP billing service provider
International VoIP Wholesale Provider
SIP Billing
VoIP Billing Software Provider

Billing Software
Call Routing VoIP Solutions
Collaboration
Gatekeepering
Outsourced Billing
Partnering for Origination and Termination
Termination

Cisco Systems
Mera
Quintum

Billing system of own development

Reynwood

Kolk Group, Inc.

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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