A service feature in which a user initiates service on a previously arranged trunk or transfers, without human intervention, from an active trunk to a standby trunk.
... from 25 to 44, 27.7% from 45 to 64, and 19.9% who are 65 years of age or older. The median age is 43 years. For every 100 females there are 102.7 males. For every 100 ...