Patent ID: 9602657
Date: 2017-03-21
CPC Classifications: H04M

Claim:
1. A telecommunication system comprising at least one server (S) running a computer program which enables said server (S) to: receive a request from a calling external telecommunication device (CTD) for a telecommunication connection with a receiving external telecommunication device (RTD); establish a data connection with said calling external telecommunication device (CTD) in response to said request; receive from said calling external telecommunication device (CTD) a receiver identifier (RID) and store said receiver identifier (RID); establish a data connection with said receiving external telecommunication device (RTD) using said receiver identifier (RID); transmit to said receiving external telecommunication device (RTD), after a data connection with said receiving external telecommunication device (RTD) is established, a server identifier (SID); close said data connection with said receiving external telecommunication device (RTD) after said transmission of said server identifier (SID); receive a request for a telecommunication connection from said receiving external telecommunication device (RTD) via said server identifier (SID) within a time slot after said closing; and check, in response to said request for a telecommunication connection from said receiving external telecommunication device (RTD) via said server identifier (SID), if a receiver identifier of said receiving external telecommunication device (RTD) matches said stored receiver identifier (RID), and establish a telecommunication connection through said server (S) between said calling external telecommunication device (CTD) and said receiving external telecommunication device (RTD) if the receiver identifier matches said stored receiver identifier (RID).