ET100A (v2) Ethernet to WAN (Synchronous) Bridge

Ethernet to WAN (V.35, RS530, RS449, X.21) bridge

The ET100A Network Bridge is a high performance remote, self-learning, Ethernet bridge. Its compact size and low cost makes it ideal for cost-sensitive bridging applications, or as a LAN extender or segmenter over bit stream type infrastructures. The built-in n x 64(56)Kbps timing clock generator makes it easy to connect to other n x 64(56)Kbps related data equipment. Several options of data interfaces, including V.35, RS-530, RS-449, X.21 and RS-232, make this unit's connection between 10Base-T or 100Base-TX LAN and various data port interfaces convenient.

Application examples:

Ethernet to Data, Point to Point application

Bridge Router Application


  • Protocol : Synchronous HDLC (ISO 13239), PPP, CISCO HDLC
  • 10Base-T or 100Base-TX Ethernet bridge
  • Auto MDI/MDIX
  • Supports IEEE 802.3x flow control
  • Selectable data port : V.35, X.21, RS530, RS449, RS232
  • Transparent half / Full duplex support on WAN, LAN interface
  • Nx64, Nx56 timing clock generator for Sync WAN link
  • LEDs indication for LAN, WAN status


WAN Interface

Interface: Selectable RS232(Sync), V.35, RS530/449, RS-232, X.21 with Adapter Cable
Protocol: Synchronous HDLC (ISO 13239), PPP, CISCO HDLC
Connector: DB25M
Type: DTE port
Data rate: RS232 up to 128Kbps; V35, X21, RS530, RS449 up to 10Mbps; Nx56Kbps, Nx64Kbps
Clock source: Tx/Rx internal or external; All Configuration by Dip switch (Protocol, interface, Clock mode, data rate)
Handshake (DCD): Follow CTS/RTS or Always On

LAN Interface

Compliant: with IEEE 802.3, 802.3u, 802.3x
Connector: RJ45
Speeds: 10/100Base-TX, Full/Half duplex
Frames: Support 64 ~ 2044 byte packet lengths

Bridge Specifications

Mac Address learning, aging and deletion after 5 minutes
256 addresses MAC table
1763 packet buffer

Indications: LEDs (PWR, WAN Rx/Tx, LAN Tx/Rx/Link/Err/Speed)
Standard: IEEE802.3, 802.3u, 802.3x
Power Input: 12VDC
Power Consumption: <5W
Dimensions: 135 x 79 x 25mm (D x W x H)
Weight: 180g
Temperature: 0~50°C (Operating), -10~70°C (Storage)
Humidity: 10~90% non-condensing
Certification: CE, FCC, RoHS complaint
MTBF: 35,000 hrs (25°C)

Live Demo of FRM220 Chassis

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