Chapter 1 Introduction
PM7516-R0 / PM7116-R0 User’s Guide
10
1.4.2 Rear Panel
The following figure shows the rear panel where the connection ports are located.
Figure 3 PM7516-R0 Rear Panel
Figure 4 PM7116-R0 Rear Panel
UPS Green On The AC power is off and the UPS (battery backup) is providing power
normally.
Blinking The battery is working abnormally, such as the voltage going outside the
expected range.
Off The battery is not in use or cannot be recharged.
PON Green On PON link to the OLT is up. Receiving an optical signal of normal strength.
Blinking Attempting to link with OLT.
Red On The link is down.
Blinking The received optical signal is too weak.
VoIP Green On A SIP account for outgoing calls is enabled and registered. The phone is
on-hook and idle.
Blinking The phone is off-hook or ringing for an incoming call.
Amber On The phone is on-hook and idle and there is a voice message. A SIP
account for outgoing calls is enabled and registered.
Blinking The phone is off-hook or ringing for an incoming call and there is a voice
message.
Off The Zyxel Device is powered off, the VoIP function is turned off, or the
phone port does not have a SIP account registered.
Table 1 Front Panel LEDs (continued)
LED COLOR STATUS DESCRIPTION
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