CALL CARD (Pre-Paid card solution)

The main features of our product are

· Caller can be from a guest location or home location.
· Authorization is flexible.
· VOIP interface available.
· Ready to integrate with any major switch (Alcatel, siemens, Ericsson).
· Flexible card management, recharging available through Internet, IVR, SMS.
· Flexible interface available (SS7, CCS7, R2MF, ISDNPRI).

Global Pre-Paid card Solution

Global Pre-Paid Card solution gives the complete solution for the prepaid cards from the signal controlling to the card management, including account management and the billing system. The main advantage of this solution is that by this kind the user can order the cards as well as the recharge coupons online. The user can also recharge his/her card through SMS. The call made by the user is generated through a PSTN switch controlled by the signaling controller and is forwarded to the call Manager where it checks if the call has been generated from the valid customer and the request is sent to the account manager. The account manager through Interactive Voice Response (IVR) system manages the balance of the call forwarded from the call manager. The complete advantage of this solution is that the user/customer can recharge his/her card from anywhere in the world as the solution is made online on the web.

GSM Base Band

“Global System for Mobile Communication” is a Digital Cellular Communication. GSM is a globally accepted standard. The mobile telephone user/subscriber can access all the subscriber services globally. The services are Tele Services, Short Message Services, Supplementary services, etc. The only element that personalizes the subscriber terminal (mobile telephone) is the SIM Card. In order to identify the subscriber/customer, SIM Card contains IMSI number. Any GSM network contains all the information about the subscribers registered in that network and the subscribers of other GSM network, who are presently roaming in this network. The subscriber’s information is stored in the databases HLR, VLR and AuC .All these databases are controlled by the MSC of that GSM network. When the subscriber tries to activate the mobile telephone or to dial a number, authentication must be done by the MSC through BSS.The BSS is combination of BTS and BSC. When the subscriber roams from one cell (region) to the other cell in the same GSM network or from one GSM network to the other GSM network, the subscriber can access all the services with out any intereption. Using call-processing technique, the GSM network identifies the subscriber’s mobile telephone and gives services access to the subscriber globally.

Terminology:

GSM – Global System For Mobile Communication.
MSC – Mobile Switching Center.
BSS – Base Station SubSystem.
BTS – Base Transceiver Station.
BSC – Base Station Controller.
SIM -- Subscriber Identity Module.
IMSI -- International Mobile Subscriber Identity.
HLR -- Home Location Register.
VLR -- Voice Location Register.
AuC – Authentication Center.