1. Meet ITU-T G.991.2 2. Program settings are single Pair, two pairs loop or 1+1 protected mode operaiton 3. Provide customer data rate, from 64K bits to 4068K bits, use 64K bits as unit setting. 4. G.SHDSL.bis, data rate can reach 11.392 million bits 5. Provide various interface, such as V.35 interface,1-4 Ethernet interface and E1 interface. 6. Nx64K bits data port, it can use software program to set to V.35/RS449/RS-530/X.21 interface. 7. By Nx64K time slot allocation, it can have V.35, Ethernet and E1(or co-directional 64k) interface operation simualtaneouly. 8. Use in-band EOC to execute remote control and monito. 9. Provide DSL loop PRBS testing 10. Provide encoding type V.54 local and remote loop back test 11. G.SHDSL and E1 status monitor 12. 96*15 minutes and 7*24 hours perfornace record storage 13. All operations options can set by using CID control port or LCD display button 14. Software can be upgraded in fields