| 摘要 |
PROBLEM TO BE SOLVED: To surely confirm a caller at a place of visit for a, etc., by easily, also economically and integratingly transferring incoming information to a receiver, regardless of the terminals of a transfer source and a transfer destination and the kinds of lines connected to the terminals. SOLUTION: Information for specifying the caller 1 of a telephone number, etc., of the caller 1 which comes to a receiver 2 is processed and transferred through a sub-address or according to a DFMF signal or a modem signal, in accordance with the combination of the lines and terminals of a transfer source and a transfer destination among ISDN, PSTN, PHS lines, a portable telephone line, a ship telephone line, an aircraft telephone line and a satellite portable telephone line with one another.
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