Alliance for Telecommunications Industry Solutions is headquartered on the 12th and G Streets, NW, in downtown Washington, D.C. The building's entrance is on the corner of 12th & G Streets.

If you choose to ride Metro, get off the train at the Metro Center station and take the 12th and G Street exit. ATIS headquarters is diagonally across the street from the 12th Street exit in the McGraw Hill Building.

If you drive, be aware that street parking in the area is practically nonexistent. Rates for parking garages range from $10 to $20 a day.

Taxis in the District are metered and now charge by distance. Fares are also affected by the number of people in your group, whether you're traveling during rush hour or if you called or hailed the cab.