Hitachi GR2000 RJ-48 to the mating receptacle on the own router, Cause malfunction or a failure

RJ-48) to the mating receptacle on the own router.

!	Caution:	10BASE-T, 100BASE-TX, WAN (BRI/PRI), and 25Mbps ATM all use the same
		8-pin modular connector. Ensure the same interface type between the
		connector and the receptacle prior to physical connection. A mismatch may
		cause malfunction or a failure.

8-pin modular

(RJ-45, IS8877, or RJ-48)