ใช้มาเกือบครึ่งปีแล้วไม่มีปัญหาครับ
แถมแถวบ้านไม่มีคนมา แชร์ เค้าปล่อยให้ 2.5Mbs ตลอดเลยครับ

I thought ADSL is a dedicated line, ie if you get 2.5Mbs, you will always get that speed no matter how many people in the area use as the line/bandwidth is dedicated to you only.
This is unlike shared technology

cable modem and a strong point of ADSL as cable modem usually claims a much higher speed

10Mbps but you may have to share bandwidth with others when subscribers in the area grows..