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.
... to 44, 21.1% from 45 to 64, and 11.8% who are 65 years of age or older. The median age is 37 years. For every 100 females there are 95.2 males. For every 100 females age ...