TERMINAL USE POWER SUPPLY DEVICE

摘要

PROBLEM TO BE SOLVED: To facilitate wiring and to easily match the polarity of a line with the polarity of a terminal equipment by minimizing the number of lines connecting to the terminal equipment and the number of connection lines for supplying power. SOLUTION: A power connector 2 of the device 1 is plugged into a power plug socket 33 and the device 1 is placed at the position of the plug socket 33. A communication line 32 is inserted to a modular jack 31 and connected to a line connector 3 of the device 1. An indicator 8 lighted or turned out matching the line polarity is provided in the inside of the device 1 to detect the polarity inversion when an ISDN line is in use. When the polarity is to be inverted, a polarity changeover switch 7 is switched to match the polarity. The line and the power supply are connected to a terminal equipment 30 via one common cable 5 from the device 1 and wiring is facilitated.