76Operating EnvironmentRemember to follow any special regulations in force in any area and always switchyour phone off whenever it is forbidden to use it, or when it may cause interferenceor danger.When connecting the phone or any accessory to another device, read its user'sguide for detailed safety instructions. Do not connect incompatible products.National Institute on Deafness and Other Communication DisordersNational Institutes of Health31 Center Drive, MSC 2320Bethesda, MD 20892-2320Email: nidcdinfo@nih.govInternet: http://www.nidcd.nih.gov/National Institute for Occupational Safety and Health (NIOSH)395 E Street, S.W.Suite 9200Patriots Plaza BuildingWashington, DC 20201Voice: 1-800-35-NIOSH (1-800-356-4647)1-800-CDC-INFO (1-800-232-4636)Outside the U.S. 513-533-8328Email: cdcinfo@cdc.govInternet: http://www.cdc.gov/niosh/topics/noise/default.html1-888-232-6348 TTY
