Although some sources claim that Jackson conducted scientific research while working at Bell Laboratories that enabled others to invent the portable fax, touch-tone telephone, solar cells, fiber optic cables, and the technology behind caller ID and call waiting, Jackson herself makes no such claim. Moreover, these telecommunications advancements significantly predated her arrival at Bell Labs in 1976, with these six specifically enumerated inventions actually occurring by others in the time frame between 1954 and 1970.