E Resource 21 Pte Ltd Singapore

E-Resource 21 started its business operation in 1st August 2000 with its principal business engaged mainly in the Civil Engineering Construction and related business including Employment Agency for the local and oversea construction business. E-Resource 21 Private Limited was incorporated on 30th October 2002and go into the highly profitable telecom industry when the local telecom industry was de-regulated in 2000.In this respect, E-Resource 21 Private Limited obtained its Service Based Operator (SBO) Individual Class License in June 2003 as a telecom service provider and subsequent approval from IDA Singapore for Prepaid Calling Card Service in August 2003. The company entered into the telecom wholesale business working with other local and overseas telecom service providers in providing wholesale termination service to selected Asia Pacific countries. In addition to the above, E-Resource 21 Private Limited also went into the highly lucrative international calling prepaid card service in Singapore and captured a niche market servicing the corporate customers and workers community working in Singapore via its branded prepaid calling card service. Thus, in a very short period of time, E-Resource 21 Private Limited has successfully captured a highly profitable niche market in the wholesale and prepaid solution in the telecom arena. For the future expansion, the company is moving forward to expand its telecom service business into Malaysia, Thailand and other selected Asian Pacific countries to provide local and oversea customers globally connected via through its IP Backbone and SIP a new range of products. Yestalk solutions services through the Public Internet World. YestalkTM products main objective is to enable clients to achieve a good return on investment by implementing a VOIP network with our advanced billing solution. YestalkTM billing solution products and services are helping many organizations worldwide to run their telephony operations quickly, profitable and effectively. Our success stories prove that how different enterprises can reduces their operating costs and request cycle time as well as increase management control and end user satifaction, all thanks to YestalkTM solutions.

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General office

E Resource 21 Pte Ltd
5611,North Bridge Road,#01-01
Eng Cheong Tower
Singapore ,198782
Singapore

Phone: +65 6820 2121
Phone: +65 6491 9367
Site: http://www.yestalk.net

Contact Person

Alex Chua / Executive Director
Phone: +65 6820 2121
Phone: +65 9660 4321

International VoIP Wholesale Provider
VoIP Billing Software Provider

SIP Softswitch & CPE

Quintum

Billing system of own development

Value Communications Pte Ltd

International Telnet Inc (S) Pte. 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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CSA

The Center of the System Administration was founded in 2001, in order to satisfy the needs for IT services of small-to-medium scale organizations by providing Open Source Software solutions.