Allied Telesis AT-MR815T - Manual (Page 14)

Product Description
4
❑ ACTIVITY lamp (green)
— This LED is lighted when packets are being sent or received
through the repeater.
❑ COLLISION lamp (amber)
— The COLLISION LED will flicker to indicate a collision. While
occasional collisions are normal in Ethernet networks, a constantly
illuminated COLLISION LED may indicate that there is a port
with excessive traffic problems.
— Continual flickering of the COLLISION LED may also indicate
excessive frame collisions on a segment. This may be caused by an
overloaded segment, a faulty cable, or a bad connection.
— If this LED is lighted for an extended period of time, it is possible
that there is a problem with the transceiver or cable.
❑ POWER lamp (green)
— This LED lights when power is being received by the repeater from
the AC to DC adapter.
Figure 2 shows the back panel of an AT-MR415T.
Figure 2: AT-MR415T Back Panel
Four UTP RJ45 network ports (including Port 4, an uplink port) are located on
the back panel. It also shows the Direct Current (DC) power receptacle which
is used in conjunction with the TUV-licensed Alternating Current (AC)
adapter which is provided.