Overview
    MDO-OTM series PDH (Plesiochronous Digital Hierarchy) the Modular Integrated Optical Multiplexer, with 4/816*E1+100M capacity, provides 4*modular slots for various function modules such as voice, data and video services It is applicable to all kinds of data, voice and video transmission area. At the same time, it also provides sufficient network management interface function and realizes SNMP network management or device management via hyper terminal. The device itself is supplied with a LCD displayer for user to carry out configuration and management.which was used in exchanger for long distance transmission, and platform of mobile telecommunication, pager transmission station ect., the completed-equipment with good performance, stable operation, low loss, strong integration capacity, small bulk, easy installation and maintenance.

Features
　◆ Favorable optic/electric specification provided by integral optic reception/transmission module
    ◆ Supporting two Ethernet interface 100Mbps；Full/ half duplex auto-negotiation
　◆  Provide SNMP channel& NMS network software (IView)
    ◆ Offering 4/8/16E1 (2.048Mbps) interfaces
　◆ E1 Line code: compliant to G.703, E1 interface adopt digital phase locked and clock extracted technique 
　◆ An official phone interface is optional, not occupy E1 channel
　◆ Offering a management RS232 interface
　◆ Offering a management NMS-ETH interface
　◆ Perfect alarm function display remote status
    ◆ up to 120Km distance without repeater
　◆ Support ALS function
　◆ Single-board architecture design

Specifications
1、E1 Port
　Compliance with ITU-T G.703 
    Data rate: 2.048Mbps 
    Impedance: 75ohm(UNBALANCE)/120ohm(BALANCE) 
    Line Code: HDB3
    Frequency deflection: 2.048MHz ±100PPM　 
    Jittering: compliance with ITU-T G.823
2、Optical Port
　Wavelength: 1310nm/1550nm (selectable)
    Transmitting power: -10dBm/-5dBm (order) 
    Receiving sensitivity: < -36 dBm BER <10-11) 
    Connector: FC 
3、Ethernet Port Interface: compliance with IEEE 802.3
    Support speed: 100Mbps line speed
    Duplex: Half/Full auto-negotiation
    Connector: RJ-45
    Interface speed: 10/100Mbps auto-detection

Typical Application
 

Order information
　MDO-OTM 　4/8/16E1, 40Km, FC, 75 or 120ohm Single mode,10/100M
    Optional:Module(MAX. 4)
      MDO-M4                4*E1 module,75ohm or 120ohm
      MDO-2V35             2*V.35 module, 2M,(Unframe)
      MDO-4V35             4*V.35 module, 2M(unframe or frame)
      MDO-4FXO/FXS     4*FXO/FXS module
      MDO-8FXO/FXS     8*FXO/FXS module
      MDO-4RS232/485  4*RS232/485 module
      MDO-FC401          1+1 Optical Redundancy Backup module,FC 40Km
      DATA                    1* RS232/485 Data