Abstract: A telephone set is provided that includes a control section that, when detecting an off-hook operation, instructs a tone generator and a codec to stop a transmission of an incoming call and simultaneously instructs, using an awaiting voice generation instructing function section, the tone generator to produce a signal voice informing an awaiting state and the codec to transmit it to a handset. At the same time, the control section generates an off-hook signal and transmits it to a packeting section. The off-hook signal is incorporated in the packet to be transmitted by the packeting section and is transmitted from a packet network interface to a packet network.

Abstract: A phone apparatus having a redialing function comprises a memory, a redialing button, a digit setting button which is used for setting a maximum digit number of limiting the digit number of the redialing number and which makes the memory record the maximum digit number, and a controller which is used for controlling operations of the phone apparatus upon the maximum digit number stored in the memory so that the digit number of dialing made by the redialing button is limited to the maximum digit number.

Abstract: A phone apparatus having a redialing function comprises a memory, a redialing button, a digit setting button which is used for setting a maximum digit number of limiting the digit number of the redialing number and which makes the memory record the maximum digit number, and a controller which is used for controlling operations of the phone apparatus upon the maximum digit number stored in the memory so that the digit number of dialing made by the redialing button is limited to the maximum digit number.

Abstract: A telephone set is provided which can prevent a user of the telephone set from having a distrust in its operations, can prevent missing of a head of a transmitted speech and can make the user free from stresses.

Abstract: A plurality of trunk interface blocks are provided to receive a plurality of telephone lines. In each trunk interface block, a ringing signal detection circuit detects an incoming ringing signal on the corresponding telephone line, and a code insertion circuit inserts in a PCM signal, coded data indicative of whether or not an individual ringing signal exists on the telephone line in response to the output of the ringing signal detection circuit. The PCM signal is transferred through a PCM time division switch and an extension interface circuit to a destination extension set. In the destination extension set, the code discrimination circuit extracts coded data from the PCM signal and controls the on-off circuit to drive the speaker in synchronization with the individual ringing signals.