may be identified further ogm 2 for example 34 the person in charge is not here right now please leave your name telephone number and message 34 is recorded operations will now be described with reference to the flow charts fig3 and 4 when the ringing signal comes into the telephone lines l1 and l2 in fig1 said ringing signal is detected by the line monitoring circuity 3 whose output is applied to an input terminal test 1 of the cpu 1 when it is determined to be a ringing signal in step 20 of the flow chart fig3 a relay y 1 is maintained energized by output of an output port 0 6 and the telephone line is engaged through a contact y1 1 of the relay y 1 step 21 in step 22 according to the command from an output port 00 3 the ogm 1 infig2 recorded on the ogm recording playback section 5 is played back and sent out to the calling party through the amplifier 8 and the line transformer lt after sending out said ogm 1 the playback of the beep tone in fig2 starts and the beep tone is detected by the beep tone detecting section it takes about 0 5 second to.