Specifications
Appendix A 
113 
A.11 FRM220-155MS SM/MM, MM/SM converter / repeater 
The FRM220-155MS is a fiber to fiber optical media converter and repeater that allows data rates up to 
155Mbps. FRM220-155MS supports 2R regeneration, which consists of re-amplification and reshaping. This 
converter is compatible with fiber interfaces such as 100Mbps Fast Ethernet, 155Mbps STM1 and OC3. The 
FRM220-155MS works well with FRM220-CH20 chassis as slide-in card or with FRM220-CH01, one slot chassis 
as a stand-alone fiber converter. When the FRM220-155MS card is placed in the FRM220 rack with SNMP 
management, the management can view the converter card's status, type, version, fiber link status and alarms. The 
card can be configured to enable or disable the port, reset the port or enable/disable Auto Laser Shutdown. 
Features 
•  Transparent fiber media converter / repeater 
•  Speed up to 155Mbps ( Fast Ethernet, OC3, STM-1) 
•  Manage via terminal, web or SNMP in FRM220-CH20 chassis 
•  Extend transmission from 2km to 120km over fiber 
•  Perform optical repeater function (Re-amplification & Reshaping) 
•  Supports Client / Line loop back test 
•  Link Fault Pass through (LFP) 
•  Auto Laser Shutdown (ALS) 
Specifications 
Ports 
Optical Interface 
Connector : 1x9 (SC, ST, FC) or SFP LC 
Data rate: Up to 155Mbps ( Fast Ethernet, OC3, STM-1) 
Regeneration type: 2R 
Loop back: Line/Client 
Cable type : MM 62.2/125μm, 50/125μm. SM 9/125μm 
Wavelength:1310nm, 1550nm, 
LEDs  Power, Line Link, Client Link, Test 
Power DC In 12V 
Power Consumption 
< 5W 
Dimension (D x W x H) mm  155 x 88 x 23mm 
Weight 120g 
Temperature 
-10~60° C (Operating) ,-20~70° C (Storage) 
Humidity 10~95% non-condensing 
Certification  CE LVD/EMI, FCC, RoHS 
MTBF 
65,000 h (25° C) 
This product includes the following models: 
•  FRM220-155MS (STM-1 Fiber Repeater with fixed transceivers) 
•  FRM220-155MS-SFP (STM-1 Fiber Repeater with SFP) 










