KX-NT366RU (serv.man2) — Panasonic PBX Service Manual (repair manual). Page 8

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8
KX-NT366RU/KX-NT366RU-B
4.2.4.
Reset Circuit
Reset Signal is outputted from IC12 and inputted into IC1 and IC2.
4.2.5.
Ethernet Circuit
The Ethernet hub IC (IC6, IC7) is used for the Ethernet interface.
It is connected from IC6 to the Ethernet port (JK2) through a transformer and so is  isolated.
Also, LAN port (JK2) gets power from the Ethernet line for PoE (Power over Ethernet) as shown below.
It is connected between IC7 and the VoIP (IC1) by high-speed bus called MII (Media Independent Interface) bus operating with
25MHz.
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