Specifications
Chapter 1 Introduction 
12 
10G
1G
1G
1G 1G
100M 100M100M
FTTx Solution
Triple-Play
ISP
IAD
IP 
DSLAM
FRM220
FRM220
GbE Switch
FE SwitchFE Switch
VOD
Softswitch
FSW3408
Fiber Switch
Media Converters
FTTH FTTC
FTTB
FRM220
FE Switch
ADSL2+
VDSL2
1.4.6 NMC LED Indicators 
Indication Color State  Description 
ON  Indicates that the No. 1 power module is correctly providing power PWR1 Green 
OFF  No power from No. 1 power module or not installed 
ON  Indicates that the No. 2 power module is correctly providing power PWR2 Green 
OFF  No power from No. 2 power module or not installed 
ON  Indicates that the No. 1 cooling fan is operating correctly FAN1 Green 
OFF  No. 1 cooling fan is not working or not installed 
ON  Indicates that the No. 2 cooling fan is operating correctly FAN2 Green 
OFF  No. 2 cooling fan is not working or not installed 
ON  Alarm 1 is active ALM1 Red 
OFF  Alarm 1 is inactive 
ON  Alarm 2 is active ALM2 Red 
OFF  Alarm 2 is inactive 
ON  NMC is ID0 or it is slave with good connection to master STK Green 
OFF  NMC is slave (ID1~9) with no connection to master 
ON  NMC kernel is booting or has hung 
Blink  NMC kernel has booted and running normally 
ACT Green 
OFF NMC kernel 
ON  LAN port has link at 100M speed 100 Green 
OFF  LAN port has no link or the link speed is 10M 
ON  LAN port has good Ethernet link 
OFF  LAN port has no link 
LNK Green 
Blink  LAN port has Ethernet link and activity 
1.5 FRM220 Application 
The FRM220 is an excellent choice for complimenting fiber infrastructure in Metro LAN, campus, corporate 
buildings, factories, or in FTTx applications. With standard SNMP management, carriers or Internet Service 
Providers will have confidence to deploy a solution that provides the necessary remote monitoring and 
configuration features. 
Figure 1-5 Application 










