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Framed E1 to FE and 2RS232 Converter
The Framed E1 to FE and 2RS232 Converter is a protocol converter (interface converter) using large scale FPGA design, providing a framing E1 interface and an Ethernet interface and two ports RS232.

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This protocol converter (interface converter) using large scale FPGA design, providing a framing E1 interface and an Ethernet interface and two serial interfaces, it is possible to achieve 10 / 100Base-T Ethernet data over E1 channels transmission, is a high performance,self-learning Ethernet bridge. The device serves as an extension of Ethernet devices, use of existing networks (PDH / SDH / microwave, etc.) provided by the E1 channels to interconnect both ends of the lower cost Ethernet and serial interfaces. Built-loop test equipment capabilities to facilitate the opening and routine maintenance works.


Mini Type

19 Inch 1U Type

Ø  Based on self -copyright  IC

Ø  Can realize monitor and control of remote equipment, OAM management data did not  take up users timeslot and save E1 bandwidth

Ø  E1 supports any timeslot set, the rate is 64K-2048K

Ø  The local device can forced the remote device rate follow it

Ø  Have indicator  when the remote device is power-off or E1 line is broken or lose signal;

Ø  Have the function of E1 interface loop back check, avoid the converter crashed because of interface loop return;

Ø  The Ethernet interface supports jumbo frames (2036 Bytes);

Ø  Inter-set dynamic Ethernet MAC address (4,096) with local data frame filtering function

Ø  Ethernet interface supports 10M/100M, half/full duplex auto- Negotination, support VLAN

Ø  Ethernet interface supports AUTO-MDIX (crossed line and straightly connected line self-adaptable );

Ø  Have Ethernet monitor self-reset function, the equipment will not dead

Ø  Provide 2 clock types: E1 master clock and E1 line clock;

Ø  Provide 2 impedances: 75 Ohm unbalance and 120 Ohm balance; 

Ø  Support SNMP Network Management 

Ø  Serial Data Interface can be RS232/RS422/RS485/TTL optional

Ø  Serial channel can transmit adaptable serial data asynchronously 300 Kbps-14.400Kbps baud rate 

Ø  Serial data multiplexing in E1 support ITU-T R.111 jumping coding mode

Ø  The local RS232 serial data can command the remote RS232 serial data loop-back to the local. This loop-back in the outer ring of RS232 data interface, you can test the RS232 interface chip without damage

Ø  Serial port interface lightning-protection reached IEC61000-4-5 (8/20μS) DM(Differential Mode): 6KV, Impedance (2 Ohm), CM(Common Mode): 6KV, Impedance (2 Ohm) standard

u E1 Interface

Interface Standard:          comply with protocol G.703;
Interface Rate:
Interface Code:

E1 Impedance:          75Ω (unbalance), 120Ω (balance);

Jitter tolerance:             In accord with protocol G.742 and G.823

Allowed Attenuation:  0~6dBm

u Ethernet interface(10/100M)

Interface rate:                10/100 Mbps, half/full duplex auto-negotiation

Interface Standard:             Compatible with IEEE 802.3, IEEE 802.1Q (VLAN)

MAC Address Capability:  4096

Connector:                 RJ45, support Auto-MDIX

u Serial Interface


EIA/TIA-232 RS-232 (ITU-T V.28)

EIA/TIA-422 RS-422 (ITU-T V.11)

EIA/TIA-485 RS-485 (ISO/IEC8284)

Serial Interface

RS-422: TXD+, TXD-, RXD+, RXD-, Signal Ground

RS-485 4 wires: TXD+, TXD-, RXD+, RXD-, Signal Ground

RS-485 2 wires: Data+(Correspond TX+), Data-Correspond TX-, Signal Ground

    RS-232: RXD, TXD, Signal Ground

u Working environment

Working temperature:        -10°C ~ 50°C

Working Humidity:                  5%~95 % (no condensation)

Storage temperature:           -40°C ~ 80°C

Storage Humidity:               5%~95 % (no condensation)



Model Number : BD-FE1-FE-2RS232

Functional Description

1channel framed E1 to 1*FE +2RS232/422/485 converterWith E1 loopback detection function

Port Description

One E1 interfaces,one 100M Ethernet interface, Two data interfaces (RS232)


Power supply: AC180V ~ 260VDC 48VDC +24V

Power consumption: 10W


Product Size: Mini type  216X140X31mm (WXDXH),1.3KG/piece

            19inch 1U type  483X138X44mm (WXDXH),2.0KG/piece


Ordering information

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