ZyXEL Communications Multi-service Access Platform MSAP2000 - Manual (Page 114)

7. Product Specification
MSAP2000 Technical Manual V3.0 7-7
7.4. Central Office Power Supply Module (CoPSM)
Overview
The Central Office Power Supply Module (CoPSM) provides the COT Shelf
with over-voltage and over-current protected for electrical power inputs, as well
as isolated DC to DC power conversion.
The CoPSM can be paired together with another CoPSM on the COT Shelf, to
provide 1+1 power redundancy protection.
Features
And
Benefits
„ LEDs on the front panel indicate the CoPSM status, fault occurrences, and
fuse status.
„ Circuit protection for low input voltage and output over currents
„ Over current protection for input and output interfaces.
„ Over-temperature auto-protection.
„ Testing connection port located on the Front Panel.
„ Digital control and Alarm Reporting.
Function Diagram
Application
CoPSM is used in those shelf that is not required the RINGER for telephone
lines.
Modules CoPSM Modules
DC
-36 ~ -72VDC
MSAP2000 Internal Power buses