With the present invention, the network authentication can be realized, and it provides convenience to the operator for controlling the number of accessed users, and the network of the operator is guaranteed.

Meanwhile, for the operator, it can attract the user without the roaming right to use the operator’s network, and improve the income of the operator.

(Entrepreneur’s network and network of the company)

A network element termed as the service aggregator is provided that resides in the operator's network and acts as an intermediate between the mobile user and the operator.

The network infrastructure of the telecommunications network operator need not be consulted, nor is there any need for additional hardware.

Note: Functions available on the live network depend on the carrier network.

Note: Functions available on the live network depend on the carrier network.

In a packet switching setup, networks have connections into the carrier's network, and many customers share the carrier's network.

The method includes receiving, at a mobile network operator node, a message or delivery to a mobile subscriber of the mobile network operator's network.

Overloading of the network of the provider chosen by the client;

SIP Trunking is an extension on the operator’s network, the enterprise VoIP network.

6 income from clients while roaming on the network of the operator.

The measurement is done in the operator's network; therefore, there is no need to contact the end user.

Functions available on the live network depend on the situations of carrier’s network and related services deployment.

Functions available on the live network depend on the situations of carrier's network and related services deployment.