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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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