WireSpan 620 (WS 620) là thiết bị chuyển đổi giao diện E1(framed/unframe) sang Ethernet (môi trường truyền E1, đối tượng truyền Ethernet)

E1-v.35 convertor provide conversion between ITU-T G.703 standard E1 interface and standard V.35 
interface, can receive synchronous 2.048 Mbps data,transfer it to router,DDN,multiplexer or other devices.Provide safe and seamless connection between differnet devices with different interfaces.
Used widely in connecting WAN and LAN, video monitor. data interface is DCE, connnect with DTE or DCE.

E1-ETH converter provide conversion from ITU-T G.703 E1 channel to Ethernet interface.
used widely in connecting between WAN and LAN, monitoring,etc.

The Eoe1 is a Channel Service Unit for unframed ITU-T G.703 E1 that features a built-in Ethernet bridge. The CSU has a built-in Network Terminating Unit (NTU) and may connect to either 75 Ohm unbalanced, BNC connectors or to 120 Ohm balanced, unframed E1 via twisted pairs and a shielded RJ-45 connector.

• Supports 10/100Base-TX Ethernet over Unframed E1
• Automatic address learning, aging and deletion after 5 minutes
• Auto padding of undersized packets to meet the minimum Ethernet packet size requirement
• Buffering modes can be selected according to the setting of WAN and LAN line speeds
• Forwarding and filtering rate at WAN speed with throughput latency of 1 frame
• Auto MDI / MDIX
• Real-time filtering with 256 MAC address table

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The ETU01-A provides an economic digital access solution for E1 and Fractional E1 network services. A DTE device may be linked to an ETU01-A at data rates of 56Kbps to 2048Kbps. The ETU01-A features user replaceable dataport modules for a number of interface standards; including V.35, X.21, RS-530, RS-449, and RS-232. The ETU01-A supports local control and diagnostics via LCD display, keypad and LED status indicators located on the front panel as well as via an RS-232 console port in conjunction with a standard terminal. These features enable users to easily configure the unit, execute the in-service diagnostics and monitor the network status. The ETU01-A provides optional SNMP (Simple Network Management Protocol), which allow the user to remotely control, diagnose and monitor the system. 

The G.703 FE1/ FE1A Access Units are single port access units for Unframed E1 or Fractional E1 services, depending on the model. Data Port rates are selectable via DIP-switches, for any multiple of 64Kbps up to 2048kbps (Fractional models only). User data is placed into the E1 frame, using only the required number of timeslots. Timeslot assignment is accomplished according to the Data Port speed and is selected by DIP switches.
The main E1 link may be clocked from the recovered receive clock (LBT), from the data port, or from an internal oscillator. The data channel interface is standard RS-530. Adapter cables are available for V.35, X.21 and RS-449. The G.703 FE1/ FE1-A’s DIP and slide switches, located on the side and front panels, provide for easy setup and control of all functions.
The G.703/FE1-A model may be cascaded as an E1 Multiplexer. The unused channel timeslots will pass through E1/Rx to E1/Tx.