SYSTEM AND METHOD FOR TRANSFERRING CREDITS BETWEEN SUBSCRIBERS TO THE GSM MOBILE TELEPHONE BELONGING TO DIFFERENT OPERATORS

A system (01) for transferring communication credits between subscribers to the mobile telephony (02) comprising a minimum of two telecommunications operators (03), each of the operators offering a mobile telephony service (04) and managing subscribers affiliated to this service (05), each subscriber possessing a portable telephone (06) equipped with a SIM card issued by the operator (07) with which is associated a call number (08) and communicating with the mobile telephony network (09) and thus having an account, either Prepaid (10) or Postpaid (11). Certain telecommunications operators offer a system for transferring communication credits between their subscribers (12) by means of a known syntax command (13). A facilitator (14), who is a privileged subscriber (15) among a set of telecommunications operators to which he would like to offer a service for transferring communications credits between subscribers belonging to different operators from among these operators (16), where a first CESSIONARY subscriber (17) belonging to a first operator (18) performs a transfer of balance in favour of the facilitator on a KNOWN NUMBER of the facilitator at the common operator (19), then dispatches a communications message (20) including the call number of a second BENEFICIARY subscriber (21) belonging to another telecommunications operator (22), as well as the amount to be transferred (23), the facilitator, in response to the communications message (24), verifies that the requester has already dispatched a communications credit in his favour (25) in the case where the requester has already dispatched a credit thereto, the facilitator performs the transfer of this communications credit deducted from the fees for the service (26) from his telephone number at the operator common with the BENEFICIARY (27), then dispatches a communications message informing the CESSIONARY of the completion of the operation (28) and dispatches a communications message to the BENEFICIARY informing same of the transfer of the communications credit and of the number of the cessionary that dispatched (29) it thereto, in the event of failure of the operation, he dispatches a communications message informing the CESSIONARY of the failure of the operation and waits for the instructions (30) thereof, the facilitator when same receives a communications credit from a CESSIONARY, dispatches a communication message (30A) reminding the CESSIONARY of the amount received and requests same to indicate t