In telecommunication, a customer service unit (CSU) is a device that provides an accessing arrangement at a user location to either switched or point-to-point, data-conditioned circuits at a specifically established data signaling rate.
... with no husband present, and 30.7% are non-families. 22.6% of all households are made up of individuals and 8.2% have someone living alone who is 65 years of age or ...