Important note: ET100A supports RS530 interface directly (no cable needed). If you need to use V.35, X.21, RS-449 or RS-232 interfaces, you need an adapter cable. We offer one such cable free with each product. Please contact us for availability of these cables. The ET100A Ethernet bridge is a perfect choice to connect CSU/DSU's up to 2Mbps to Ethernet(10/100BaseTX) networks. Replace your costly router card and connect new Ethernet only equipment with the ET100A bridge. It's a small powerful device that accepts most of the synchronous data interfaces used like: V.35, X.21, RS-530 or RS-449. ET100 will only need the right selection of cable for your existing synchronous data port. Unit can also be used as a LAN extender over TDM networks. Features of ET100A Ethernet bridge Protocol : Synchronous HDLC (ISO 13239), PPP, CISCO® HDLC Automatic MAC table learning and aging and Auto MDI/MDI-X for RJ-45 port Buit-in timing clock generator n x 56K/64K for WAN sync Selectable data port interface: V.35, X.21, RS-449, RS-530, RS-232 (for RS-449 and RS-232 options, please contact our sales for availability) Transparent Half/Full Duplex on both LAN/WAN interfaces Technical specifications Connectors: RJ-45 10/100BaseTX Ethernet connector Bridge specs: MAC table 256 addresses, 15000 frames/sec filter and forward LEDs: Activity/ LAN/ WAN Power: External 9V DC adapter(AC 100-240V adapter included in box) Temperature: 0-50ºC (Operating), -20 - 65ºC (Storage) Humidity: 5%-90% non-condensing Dimensions: 79mm x 135mm x 25mm Weight: 150g