In telecommunications, directory assistance or directory inquiries is a phone service used to find out a specific telephone number and/or address of a...

free of charge. Selectphone (ProCD) Inc.) and PhoneDisc (Digital Directory Assistance Inc) were among the earliest such products. These were not a matter...

The Directory Assistance Service (DAS) is an obsolete protocol and service for accessing X.500 directory services. DAS was intended to provide a lightweight...

411 is a telephone number for local directory assistance in Canada and the United States. Until the early 1980s, 411 – and the related 113 number – were...

reserved for telephone company use and was only consistently used for directory assistance (information), being "555–1212" for the local area. An attempt to...

This model of directory access was borrowed from the DIXIE and Directory Assistance Service protocols. The protocol was originally created by Tim Howes...

and connected emergency calls to the correct emergency services. Directory assistance was also part of the operator's job. In the early days of telephony...

traveling overseas Development assistance, financial aid given to support the development of developing countries Directory assistance, a phone service used to...

telephone directories are used by law enforcement and other emergency services in order to determine the origin of any request for assistance, however...

national directory assistance (withdrawn in the early 2000s and replaced with 11811, originally 190) 1197 Telecom Éireann UK directory assistance (withdrawn...