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STM-1 equipment has a popular 19-inch box structure which is composed by a main board and various interfaces. It is one of HG MSTP family, which providing integrated solutions of  access,convergence and transmission for TDM and the broadband service. And consummate functions are provided with a compact dimension. Hot-swappable optical interfaces and extension board guaranteed the stabilization and safety 

1 Multiple interfaces, STM-1/STM-4, E1,10/100 Ethernet, Ext-CLK and OW available

2 E1 retiming function for timing calibration.

3 Universal 10/100M Ethernet service, with LAPS/GFP packing&mapping,supporting LCAS,VCAT.L2SW,STP,VLAN,etc.

4 Multiple topologies, including line and ring,1+1MSP and SNCP

5 Network management systerm based on TCP/IP protocol,running on PC.

6 Special power process technology,immune from most power surge.

7 Optical power consumption,15W for standard load.

8 Compact dimension,only 1U in height,19-inch wide