| 摘要 |
PROBLEM TO BE SOLVED: To extend a visually recognizable range of displaying the arrival of a call, when the call comes from an entrance slave set. SOLUTION: When a call arrives from an entrance slave set, a call tone rings and a display LED which is provided to an LED lighting section 12 of a handset 7 of an interphone master set is lighted to display the arrival of the call. The LED lighting section is provided to a curved part 71 of the handset, that is shaped in a curved shape. Thus, the user can confirm the arrival of a call, from not only the front direction of the handset but also from the side face direction.
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