(I) Service Terminal Introduction

1¡¢GateKeeper

Authorizes and authenticates all calls and communicates with the billing system. It also has many other management functions such as Bandwidth Control and Zone Management

2¡¢Billing System

Based on Radius, record and report all transactions; Provide Real-time billing, CDR and customer care with IVR system.

3¡¢Soft-switch Platform

Compatible H.323¡¢SIP¡¢MGCP, and 711¡¢723¡¢729 alternative, realize the route between carrier and client terminal to be connected effectively

4¡¢IVR System

Provide Interactive Voice Response Service to customers to direct the caller through the call process. The IVR prompts the exchange of a PIN and a dialing destination number, and it alerts the user of the remaining balance on a prepaid card.

5¡¢E1 Gateway

It is the bridge between PSTN and IP network whose IP interface needs legal IP address to be configured, while E1 interface is connected to PSTN from telecommunication carrier to realize the conversion between analog signal and digital¡¯s .Collecting the termination from IP telephone card¡¯s user is to realize the dial for home and abroad call.

6¡¢PROXY

Implement connection to the different termination service provider. Support different protocol such as H.323, SIP and MGCP. And the codecs of G.711, G.723.1 and G.729 are compatible.