Long Distance Calls within the United States or Canada 8+1+Area Code+7-Digit Number Wait for Confirmation Dial Tone Enter Authorization Code International Calls (except Canada) 8+011+Country Code+(City Code)+Telephone Number+# Wait for Confirmation Dial Tone Enter Authorization Code On-Campus Dialing When dialing any on-campus telephone set, the dialing sequence should be abbreviated to five digits: Examples: 492-6798 should be dialed as 2-6798 786-4394 should be dialed as 6-4394 735-2330 should be dialed as 5-2330 Off-Campus Local Call Dial 8+Area Code+7-Digit Number On Campus Directory Assistance Dial 0 Directory Assistance Dial 8+1+Area Code+555-1212 Wait for Confirmation Dial Tone Enter Authorization Code International Directory Assistance Dial 0 (The charge varies per request; a campus operator must assist in placing these calls.) Collect Call Dial 8+0+Area Code+ 7-Digit Number (The operator will request billing information.) Collect International Call Dial 8+0 (The operator will request billing information and assist in placing the call.) Calling Card Call Please refer to the dialing concerns to your specific long distance vendor. Restrictions (The following restrictions apply to the entire Boulder campus.) Do not accept collect calls. A surcharge up to $100.00 will be charged each time you accept a collect call. Do not use your campus phone number as the billing station for a third-party call. (A third-party call is a call made from one telephone but billed to another telephone number.) A surcharge up to $100 will be charged each time a third-party call is made with your campus phone number as the billing station. Calls to numbers in the 900 area code or to a telephone number with a local 976 prefix from the Boulder campus are blocked by the University switchboard and cannot be dialed. Area Code Lookup AT&T Business Traveler Dialing Guide AT&T Traveler Country & City Codes