Patent ID: 7570745

Claim:
A telephone system having a message recording function, comprising: a main body connected to a telephone line; and at least one handset placed on a cradle, said at least one handset being connectable to the main body via wireless communication, said at least one handset having an input unit configured to accept an external input therethrough; wherein the main body includes: a message receiving system that is connectable to a calling station through the telephone line and capable of receiving a message transmitted from the calling station through the telephone line when in a connected state; a message storage in which the message received by the message receiving system is stored; a message reproducing system that retrieves a message stored in the message storage and outputs the message to said at least one handset via the wireless communication; an off-hook setting system that sets the telephone line to an off-hook state; a calling system that makes a call to an external device via the telephone line; and a control system, wherein said at least one handset includes an instructing system: the instructing system issuing a first command that instructs the main body to set the telephone line to the off-hook state to the main body via the wireless communication when said at least one handset is picked up from the cradle, the instructing system issuing a second command that instructs the main body to make a call to the main body via the wireless communication when the input unit accepts therethrough an external input for making the call, and the instructing system issuing a third command that instructs said message reproducing system to output a message to the main body via the wireless communication when the input unit accepts there through an external input for reproducing the message through the input unit, wherein the main body receives any one of the first command, the second command and the third command from said at least one handset via the wireless communication while keeping said telephone line in the off-hook state once the telephone line is set in the off-hook state, wherein the control system controlling the off-hook setting system to set the telephone line to the off-hook state when judging that the main body receives the first command from said at least one handset via the wireless communication, wherein the control system controlling the calling system to make the call via the telephone line when judging that the main body receives the second command from said at least one handset via the wireless communication, and wherein the control system controlling the message reproducing system to reproduce the message without being interrupted, with the telephone line kept in the off-hook state to avoid receiving incoming calls, when judging that the main body receives the third command from said at least one handset via the wireless communication.