Sharp AHT-E300 - Manual (Page 29)

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AHT-E300 ADSL ROUTER
17. Click Admin Privilege - [ADSL Configuration] link. Then the ADSL
Configuration page will appear. In this page, you can change the ADSL
options.
Trellis When you using G.DMT protocol, enabling trellis
option may get more data rate.
Handshake Protocol You can select G.DMT or ANSI T1.413.
Wiring Selection You must select Tip/Ring.