General Information10• Only use a slightly damp or an anti-static cloth to clean your telephone. Never usea dry cloth. Never use cleansing agents.• Do not use your telephone in areas at risk of explosion.• Do not use Aastra 610d and 620d in damp rooms (e.g. bath).• Do not hold the telephone in the hands-free mode next to your ear as the volumecan be very high.• Set up and keep mobile device and accessories outside the reach of children.• This product's earcap region (at the front) and the loudspeaker region (at the rear)is slightly magnetic and may pick up metallic objects, such as staples or pins.Please check both regions for metallic objects before use.Note for persons wearing hearing aidsPersons wearing hearing aids should keep in mind that when using the mobile deviceat sufficient volume, the resulting radio signal interference produces an unpleasanthumming noise.Communications Regulation InformationFCC Notices (U.S. Only)This device complies with part 15 of the FCC Rules. Operation is subject to the fol-lowing two conditions:(1) This device may not cause harmful interference, and (2) this device must acceptany interference received, including interference that may cause undesired operation.Modifications not expressly approved by this company could void the user’s authorityto operate the equipment.NOTE: This equipment has been tested and found to comply with the limits for aClass B digital device, pursuant to Part 15 of the FCC Rules. These limits are designedto provide reasonable protection against harmful interference in a residential instal-lation. This equipment generates, uses and can radiate radio frequency energy and, ifnot installed and used in accordance with the instructions, may cause harmful inter-ference to radio communications. However, there is no guarantee that interferencewill not occur in a particular installation. If this equipment does cause harmful inter-ference to radio or television reception, which can be determined by turning theequipment off and on, the user is encouraged to try to correct the interference by oneor more of the following measures: