TST-CON04 can realize the conversion of multiple E1 and Ethernet interface. This equipment can implement the point-to-point transmission of MAC frames through one to two E1, and automatically inspect and use the effective E1 channel; the highest transmission rate is 4Mbps, which can very conveniently extend the application range and transmission distance of Ethernet.
   TST-CON04 (Ethernet/2E1 converter) has many good points including high integration, strong reliability, low power dissipation, small volume, complete function, etc., and the greatest advantages include: wide transmission channel, good protection for transmission channel, and stable working under the bad environment. The installation of whole body has not any adjustable point, with convenient use and simple maintenance.

Typical Networking Application:

Main Characteristics：
◆ Adopt large scale chip, simple circuit, low power dissipation and high reliability ；
◆ Provide one 10/100M Base-T port, support 10/100M full duplex , half duplex and automatic negotiation mechanism;
◆ No-delay demand for E1 channel;
◆ Support local Ethernet exchange function;
◆ Support VLAN function;
◆ Support priority function based on port or 802.1p;
◆ Support flow control function based on 802.3x;
◆ Support Ethernet frame transparent transmission;
◆ Provide two-way E1 configuration, E1 interface impedance supports 75Ω;
◆ Provide one management interface, which can flexibly set functions of equipments;
◆ Have the complete alarm and status indication;
◆ Adapt to many kinds of power supply environments.

Information for panel indicator light：
◆ Indicator light of power supply (POWER, green light): light at normal status;
◆ Ethernet interface full duplex indicator light (DUP, green light): the full duplex lights when the Ethernet interface works;
◆ Ethernet interface conflict indicator light (COL, yellow light): twinkle when the Ethernet interface conflicts ;
◆ Ethernet interface rate indicator light (10/100, green light): light when the Ethernet interface works at a rate of 100M;
◆ Ethernet interface working indicator light (L/A, green light): light when the Ethernet interface connects, and twinkle when the data flow exists ;
◆ E1 interface alarm indicator light (ALARM, yellow light): twinkle when E1 channel generates failure, and always light when receiving AIS ;
◆ E1 interface working indicator light (WORK, green light): light when E1 interface receives signals;
◆ System working indicator light (RUN, green light), twinkle when the system normally works;
◆ System alarm indicator light (ALARM, yellow light): light when the system generates alarm ；
Management interface （CONSOLE）；
◆ Dial switch (SW): when the equipment parameters are set as the configuration of dial switch, the dial switch is effective.

Main Technical Indexes and Functions:
  ◆ Indexes of power supply :
     DC power supply voltage: -48VDC; tolerance range: -36V~-72V; power supply ripple:     ≤240mVp-p
     AC power supply voltage：220VAC±20% 50HZ, power dissipation ：≤10W
  ◆ Indexes of Ethernet interface :
    Physical interface type ：RJ-45
     Interface specification: conform to IEEE-802.3u standard
     Interface rate: 10/100M self-adapting
    Network bridge parameter: the filtering and transmitting rate reaches 15,000 frames     per second
             256-frame buffer
             10,000 MAC address LAN table
             Self-study and update function
             Increased Tiny Gram compressed mode
  ◆ E1 electrical interface index Number of sub-circuit: two
    Nominal rate: 2048Kbps, tolerance±50ppm
    Interface code pattern: HDB3
    Interface impedance: 75Ω (imbalance)
     Electrical characteristics of digital interface: conform to ITU-TG703 suggestion
    Input jitter tolerance: conform to ITU-TG.823 suggestion
     Input jitter: conform to ITU-TG823 suggestion
    Level：±2.37V±10%
    Interface connector: BNC or CC4 (75Ω)
  ◆ Management interface characteristics
     Interface mode: RS-232
    Interface level: RS-232 level
    Interface connector: RJ-45
  ◆ Environmental demand
     Working environment: environmental temperature: 0℃~45℃; relative humidity: ≤85%     (35℃)
     Atmospheric pressure ：86-106Kpa
  ◆ External dimensions ：200×145×35mm