This section describes how customers and agents can implement Voice over IP technology. GTS supports multiple VOIP hardware devices like the Cisco IAD with multiple voice interfaces.

· Small Corporate Offices without a PBX.

Assuming your office has a dedicated Internet connection, the FXS units are plugged directly into your Ethernet LAN hub or router. Then, regular telephones are plugged into the Cisco device. When a caller picks up the handset, the call is immediately processed over the Internet. The user hears a dial tone.

This scenario is similar to the small business office described above. However, phone service can be sold to anyone who needs to make a long distance phone call. The major difference is that each customer must be charged separately for his or her phone time.

In the event that a call shop is accustomed to billing for exact charges, the owner of the Call Shop or Internet caf? can view the call records on the GTS web site and issue exact change. In this scenario, unique account codes are not necessary for each caller.

Alternatively, the operator of the Internet cafe or call shop may sell the customer a prepaid phone card. The Internet Cafe can sell phone cards in various denominations, i.e. $1.00, $5.00, $20.00 etc and in any currency. The customer picks up the handset and enters the account number when prompted. After the customer enters a valid account code, he is prompted to dial his destination. In this scenario, there is no accounting to be done or change to be issued at the cash register. If the customer does not finish the card, the value is retained in the card until the next time it is used. Under this scenario, the phone number of the calling unit is not entered into our switch and the caller will be prompted for his or her account code.

The FXO unit can be deployed in any large company, similar to the small office scenario, except that the FXO is connected to a PBX instead of directly to the telephone handsets or the local phone company. If there are one hundred employees in a company, they can all have access to the VoIP calls. To make an international call, the caller would just dial 8, for example. A line would be opened to the GTS switch and the caller will get dial tone and would dial the destination number. All calls preceded by 8 would be routed through the Cisco device and the caller never knows his call is going over the Internet.

Hotel owners can connect a Cisco device to their Hotel PBX in the same manner as described above. However, the hotel will want to charge the customer for the calls. In this case, the hotel owner can perform billing in several different ways. The owner can simply require the customer buy a prepaid phone card. Alternatively, the Hotel owner can use the billing functions that may exist in the Hotel PBX, or the hotel owner could go to the GTS website and view and print the customer’s call records. Each room would have its own account number.

· Prepaid Phone Cards.

One of the most exciting business opportunities made available through the GTS VoIP system is the ability to quickly establish a prepaid phone card business. The FXO unit can be used to set up a phone card network. The entrepreneur must acquire phone lines from the local phone company. The lines should come with phone numbers or toll free numbers. The numbers should roll from one trunk to the next when one trunk is busy.

The entrepreneur then sells phone cards in any denomination and in any currency. The customers make a local phone call or toll free phone call to that number. The call hits the Cisco device, is passed to our switch and the caller is prompted for his or her account code.

The entrepreneur can sell access to phone service without physically opening up a call shop or Internet cafe? and can distribute cards widely around any city or country. The entrepreneur is able to avoid investing in expensive switching equipment because GTS provides a world-class prepaid calling card platform. This system replaces traditional International Callback services.