JP2009272841A5 - - Google Patents

Claims (3)

In a telephone system comprising a call control device that accommodates an external line and an internal line and a plurality of internal telephones connected to the internal line,
The extension telephone includes a list of requestable list requesting means for requesting an extension list that can respond to a general call out of a specific extension group or all the extensions, and a list requested by the simultaneous callable list requesting means from the call control device. And a simultaneous callable list receiving means for receiving
The call control device includes: a simultaneous callable list request receiving unit that receives the general callable list request from the extension telephone; and when the general callable list request receiving unit receives the general callable list request, Call availability detection means for detecting whether or not an extension can be called; and
A telephone system having a general call function, characterized by comprising: a list of callable extensions detected by the call permission / inhibition detection means and transmitting to a list requesting extension telephone. The telephone system according to claim 1,
The extension telephone further includes simultaneous call rejection setting means for setting an extension for rejecting simultaneous calls,
The telephone system having a general call function, wherein the simultaneous call list transmission means excludes the extension set for the general call rejection from the callable extension list regardless of whether the extension can be called.
The telephone system according to claim 2, wherein
The extension telephone further has non-rejection extension registration means for registering a specific extension that does not reject simultaneous calls,
The simultaneous callable list transmitting means is an extension registered in the non-rejected extension registration means even if the telephone of the extension that can be called is set to reject the general call. If there is a telephone system, a telephone system having a general call function, wherein the extension is not excluded from the callable extension list.