Knowledge Base

Audio Conference
 

Public Switched Telephone Network (PSTN)

The PSTN is the world's collection of interconnected public telephone networks, both commercial and government-owned, that was primarily designed for voice traffic

Voice over IP (VoIP)
VoIP technology is a general term for a family of transmission technologies that allow the delivery of voice communications over Internet Protocol networks such as the Internet

Web Conferencing

Web conferencing is a form of real-time communications in which multiple computer users, all connected to the internet, to conduct live meetings, training, or presentations

Total Cost of Ownership (TCO) 

In general, the purchase price of an asset plus the additional costs of operation. This includes indirect costs of installation, training, repairs, downtime, technical support, and upgrading

400/800

400 Number

Our 400 number is an upgrade from our Domestic 800 service. Charges will depend on the 

ratio between the caller, and the receiving party

Competitive Advantage

An advantage that a firm has over its competitors, allowing it to generate greater sales or margins and/or retain more customers than its competition

Domestic800

This service allows domestic callers to contact the toll-free subscriber’s designated “800 service” number without the callers being charged for the call

International 800

International 800 allows a toll free number subscriber in one country (or more) to receive long distance calls from customers and callers from another country, without the calling party being charged

Toll-Free-Number

Toll-free numbers allow callers to reach businesses without being charged for the call. The charge is paid by the toll-free subscriber instead of the calling party

For more information please contact us at: +86.400-888-5088 or Email at support@qtct.com.cn