To provide the exchange whose transfer service is improved.
When a terminal A (for voice) 201 of an ISDN extension interface 21 registers transfer registration, its attribute and transfer destination are registered. When a call comes in the interface 21 whose transfer is registered, in the case the attribute (e.g. for voice) included in call reception information is the same as the attribute (for voice) at the transfer registration, the call is transferred to a transfer destination terminal F (for voice) 206. If the attribute (e.g. for G4 facsimile) included in the call reception information is different from the attribute (for voice) at the transfer registration, the call is not transferred but comes in a terminal B (G4 facsimile equipment) 202 of the interface 21 as it is. The call is transferred only when the attribute of the transfer destination terminal equipment is the same as the attribute included in the call reception information.
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