| 摘要 |
<p>A USSD server, an HLR server, and a call transfer method based on USSD. The USSD server comprises: a first receiving module, configured to receive a USSD instruction string transmitted by a first terminal and successively passing a mobile switch center, a USSD gateway or a USSD center; a parsing module, configured to parse the USSD instruction string to obtain a parsing result; an instruction generating module, configured to generate a call transfer control instruction according to the USSD instruction string when the parsing result indicates that the USSD instruction string is legal; and a first transmitting module, configured to transmit the call transfer control instruction to an HLR server. With the described technical solution, a user may use the current terminal to control a terminal currently not at hand to open or close a call transfer function.</p> |
