About 177 and how to use the services177 is a national phone number for public transport services. Wherever you are in Norway, you can dial 177, and ask your specific question related to travel facilities, where and when. The cost of the call is at standard rate depending on where you are calling from.
Also, the 177 website gives you links to regional public transport facilities. Click on your actual region(county) and a pop-up will appear providing you a list of websites with travel information in the region.
Be aware that many of the linked sites are in Norwegian only. The more details you know of your travel, the better result on the search is available.
177 is not responsible for the content of the linked sites.