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                21E1+8ETH SDH multiplexer

                It is a new generation multi-services transmission and access device based on SDH technologies. The function models design adopts G.783 suggestions and provides complete monitor, access, protection, network management and Ethernet access function. SDH155 can provide 2 STM-1 uplink interfaces, 21 E1 interfaces and 8 10/100BaseT Ethernet interfaces. It adopts modular structure design for flexible service configurations according to different requirements. It can be used as service access and transmission devices on access layer in the data traffic networks, adopts SNMP network management platform which provides grades powerful management based on Service/Client end mode.

                Product Description


                It is a new generation multi-services transmission and access device based on SDH technologies. The function models design adopts G.783 suggestions and provides complete monitor, access, protection, network management and Ethernet access function. SDH155 can provide 2 STM-1 uplink interfaces, 21 E1 interfaces and 8 10/100BaseT Ethernet interfaces. It adopts modular structure design for flexible service configurations according to different requirements. It can be used as service access and transmission devices on access layer in the data traffic networks, adopts SNMP network management platform which provides grades powerful management based on Service/Client end mode.


                Characters

                      nHigh-integration, modularized design.

                     nProvide 2 STM-1 uplink interfaces. 

                     nProvide 1+1 channel protection, realize fast protection switching.

                     n21 E1 interfaces and 8 10/100BaseT Ethernet interfaces.

                     nComplete clock function, provide clock tracking and holding functions.

                     n2.048Mbit/s external synchronous signal input/output.

                     nClock resource can select line clock, external clock or free-run.

                     nVia SNMP network management system, user can do operations for device and network formed by it and the                    operations include configuration, maintenance and monitor.

                     nNetwork management can realize five major functions included: configuration, alarm, performance,             

                                    maintenance and security which satisfy with ITU-T suggestions.

                     nProvide Console interface, support local management via serial port on PC.

                     nFor Ethernet service, GFP and LAPS technology is used, have LCAS function.

                     nThe maximal Ethernet band is 100M.

                     nSupports hot-plug.

                     nIt can be used as TM or ADM.

                 


                Parameters

                    Environmental requirements

                               Operating temperature: 0~50 deg.

                                Deposited temperature: -20~70 deg.

                                Relative humidity: <95% ( on-condensing)


                    Power

                               Power supply mode: AC220V, AC110V or DC-48V

                                 Power DC-48V: input range DC-36V~DC-72V

                                 Power AC220V: input range AC180V~AC260V

                                 Power AC110V: input range AC90V~130V


                                 Power consumption: <7W


                    Optical interface performance index

                                Optical interface performance index complies with ITU-T G.957/G.958

                                  Work wave length: 1310nm

                                  Rate: 155.520Mb/s±4.6ppm

                                  Fiber type: ITU-T G.652/G.653, SM

                                  Transmission distance: 0~120Km for option

                                  Receiving sensitivity: <-36 (BER<10)

                                  Connector: SC/FC


                    E1 interface

                                Complies with ITU-T G.703

                                 Data rate: 2048kbit/s

                                 Code: HDB3

                                 Impendence: 75ohm unbalanced, 120ohm balanced for option

                                 Jitter characteristic: complied with ITU-T G.742, ITU-T G.823



                    ETH port

                              Rate: 10/100M, Full-duplexes, half-duplex completely auto-adapted

                               Protocol: IEEE 802.3

                               MAC address table: can learn 1024 MAC address

                               Ethernet total cache: 64MBits SDRAM

                               Physical interface: RJ45 interface, Supports cross/straight line of Adaptive


                Dimensions

                              1U/19 inch: 483* 326*44*mm


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