Picture telephone monitoring system in which a picture telephone (14) in a
monitoring side and another picture telephone (18) in an operating side
are connected to each other, and the picture telephone (14) is connected
to an operation console (16). The operation console includes an infrared
sensor (17) for detecting an intruder, a displacing device for moving a
view field of a camera combined with the picture telephone (14), a sound
pickup microphone, a speaker for outputting audio signals transmitted
from the picture telephone (18) and received by the picture telephone
(14) via an earphone terminal thereof, and a preset value accumulating
section for recording therein a telephone number of and an in-coming dial
tone from the picture telephone (18).