In 1907 , Theodore N. Vail combined the AT&T and Western Electric engineering departments into a single organization that became Bell Labs in 1925 .
Western Electric Company was responsible for developing as well as manufacturing Bell equipment .
In 1907 , Theodore N. Vail combined the AT&T and Western Electric Company   engineering departments into a single organization that became Bell Labs in 1925 .
Western Electric Company was responsible for developing as well as manufacturing Bell equipment .