dial service assistance (DSA)
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- A network-provided service feature, associated with the switching center equipment, in which services, such as directory assistance, call interception, random conferencing, and precedence calling assistance, are rendered by an attendant.
ATIS - Cite This Source - This Definition - add-on conference, attendant access loop, attendant position, Directory Assistance Call Completion (DACC), fixed loop, three-way calling, toll diversion, toll switching trunk