can dsl used as wireless,landline not available

Hi my name is Ahmer Choudhary. I'm working in a construction company outside 20 km Islamabad city in Pakistan. Due to unavailability of landline phone we have to use wireless cdma phones to connect to the internet. So its speed is very poor and connection is disconected when stayed idle for some time. I use gprs for net use but still very low speed and high cost. In Islamabad & Rawalpindi there are dsl connections available but they require landline phones, is there a way that I could connect to that dsl connection by wirelese modem or any thing like that ? I need help on this one. Is there two way internet in Pakistan by satellite ? If yes what does it cost, thank you  
Ahmer Ch. 092-321-5157626