As a broadband PDH multiplexer, FOM8E1 offers 155M optical interface as STM-1 load with various services. It supports eight standard 2M interfaces in both BNC form and RJ45 form, as well as external alarm interface, 10/100 Base-T Ethernet interface and V. 35 interface, which can be cross-connected to E1, etc. Though multiple interface are provided, almost all the ports are arranged onto rear panel to make it much easier for cable wiring and maintenance. The compact design also gives much room for easy-to-use LCD and keypad.

Double optical interfaces, 1+1 protection and automatic laser shut (ALS) 
8 E1 for 75ohm and 120ohm impedance 
10/100M BASE_T auto adapting Ethernet   
N×64K V. 35 interface, cross-connect with E1 available 
Both AC220V and DC-48V power feeding for power redundancy 
8×BNC connectors and 8×RJ45 connectors for E1 options 
2 relay contact outputs 
External user alarm interface   
Powerful LCD function, achieving all local and remote monitor and configuration 
Serial port NMS based on PC and Windows OS and SNMP supported 
All interfaces designed as per corresponding ITU-T recommendations