Yes, if you have entered into an agreement with a telecommunications company for the supply of telephony services the company must ensure that these services are provided in accordance with the agreement.
With regard to how quickly the fault correction must occur, you must check whether the agreement with the telecommunications company states anything relating to this. The telecommunications company can choose to offer a guaranteed fault correction time or response time for fault correction, either as part of the subscription or as an additional service you have to pay extra for. The electronic communications regulations that Nkom enforces state nothing about how quick fault correction must occur.
It depends on the agreement you have with your telecommunications company and general law of torts as to whether you can claim compensation if the telecommunications network fails. If you do not reach an agreement with your provider you have the right to complain to the Consumer Complaints Board for Electronic Communications.
The political authorities in Norway have decided that there shall be no universal service obligation for broadband, ISDN and other data transmission services. Therefore, Telenor and other companies have not obligation to provide broadband and no consumers are entitled to access to this service (even if others in the same area have received access).