DWELLING UNIT DEVICE FOR INTERPHONE SYSTEM FOR RESIDENTIAL COMPLEX

摘要

In a dwelling unit device (A), if the call terminal at the other end of communication is an analogue transmission-type, a call processing unit (2) implements a first software; if the call terminal at the other end of communication is a packet transmission-type, the call processing unit (2) implements a second software, and thus call processing which is suited to each transmission-type can be selectively implemented.