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The filter prevents noise and caller ID problems caused by DSL interference. Please contact your DSL service provider for more information about DSL filters. Your product may be shipped with protective stickers covering the handset and telephone base displays - remove them before use. For customer service or product information, visit our website at or call 1 (866) 288-4268. Avoid placing the telephone base too close to: Communication devices such as television sets, VCRs, or other cordless tele