1, 2, 4, 8, 16 pdh fiber optical multiplexer

Provides 4e1/8e1/16e1 the g.703 connection
Realizes long-distance monitoring of this end equipment to the far-end equipment
Provides function of ordering 4e1/8e1/16e1 to loop return from the remote end, fiber self-loop at local end; and provides a group service telephone interface (to select)
Three power supplies: dc-48v, dc+24v or ac220v
Transmitting range: 2-120km
The double filament bidirectional and the single filament bidirectional type may select
Conforms to the telecommunication level operation
Requirement, and does not have the fault time equally (mtbf) above 100, 000 hours