HC-DM3721 OverviewHC-DM3721 is a compact SDH device with STM-1 interface. It can connect with any standard STM-1 optical port, connect to the metro network directly and build point to point netwo
HC-DM3721 is a compact SDH device with STM-1 interface. It can connect with any standard STM-1 optical port, connect to the metro network directly and build point to point network. 8×E1 lines, 2×100Base-T Ethernet service can be supplied.
HC-DM3721 can work as terminal equipment in the point to point network. It is mainly used in access layer network to supply various services such as STM-1, Ethernet typical applications include big client access,3G mobile station connection and etc.
Standard STM-1 optical ports, 1+1 protection supported, dual or single fiber WDM transmission, different wavelengths and powers can be selected.
Standard SDH mapping of various service interfaces.
Ethernet mapping adopts GFP/VC-12 virtual concatenated technology, Laps and PPP/HDLC protocol.
Comply with ITU-T G .703
E1 port has on-line error surveillance and loop back test function；
NM port for management
Standard 19 inch 1 U
Both supply -48V DC and 220V AC
Can be configured or managed by CLI, DIP switch or HCView NM software
Data rate: 155.520Mbps
Comply with ITU-T G.703
IEEE802.3/802.3u completely compatible
Interface rate: 10/100Mbps self-adaptive
The bridge connects function:
256 frame buffer
Automatic self-study and refresh MAC address (1024)
Support MDI/ MDIX function
The management connector (serial interface)
Baud rate: 9000
Both supply 220V AC（165～240V）and -48V DC（-36～-72V）
Dimension: 19” 1U
Working Temperature: -5°C~+45°C
Store Temperature: -20°C~+70°C
Relative humidity: 5%～90% no coagulation
Both 220v AC and -48V DC