Baltimore City Services
Web site http://residents.baltimorecity.gov/CityServices.aspx
If you're not sure which agency to call for assistance - contact the City's One Call Center by dialing 311 or (443) 263-2220. The Municipal Telephone Exchange is responsible for the Baltimore City Government’s communications systems, including the operation of the CENTREX '396' , '545' network. For Information call (410) 396-3100.