Apparatus, system, and method of managing terminals, and recording medium

A method of managing information regarding a plurality of transmission terminals, comprising:

• storing a candidate list for each one of the plurality of transmission terminals in a memory, the candidate list associating identification information of one or more candidate counterpart terminals each capable of communicating with the transmission terminal, with identification information of the transmission terminal;
• receiving a deletion request for deleting identification information of a second transmission terminal of the plurality of transmission terminals from the candidate list of a first transmission terminal of the plurality of transmission terminals;
• deleting the identification information of the second transmission terminal from the candidate list of the first transmission terminal;
• deleting identification information of the first transmission terminal from a candidate list of the second transmission terminal;
• and
• transmitting, to the second transmission terminal, notification indicating deletion of the identification information of the first transmission terminal from the candidate list of the second transmission terminal.

A non-transitory recording medium which, when executed by one or more processors, cause the processors to perform a method of managing information regarding a plurality of transmission terminals, the method comprising:

• storing a candidate list for each one of the plurality of transmission terminals in a memory, the candidate list associating identification information of one or more candidate counterpart terminals each capable of communicating with the transmission terminal, with identification information of the transmission terminal;
• receiving a deletion request for deleting identification information of a second transmission terminal of the plurality of transmission terminals from the candidate list of a first transmission terminal of the plurality of transmission terminals;
• deleting the identification information of the second transmission terminal from the candidate list of the first transmission terminal;
• deleting identification information of the first transmission terminal from a candidate list of the second transmission terminal;
• and
• transmitting, to the second transmission terminal, notification indicating deletion of the identification information of the first transmission terminal from the candidate list of the second transmission terminal.