Summary of Contents for Clarity Professional C4210
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C4210 Quick Start Guide ™ For help, call 1-866-5-CLARITY Connecting Your C4210 1. Plug the line cord into the base of the telephone and then into a standard phone jack. 2. Plug the AC adapter into the base of the tele- phone and then directly into a power outlet.
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Activating Digital Clarity Power™ To increase the volume and clarity of your call, press the BOOST button on the side of the telephone handset. Then use the volume dial to customize the volume to your desired level.