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2. Automatic number announcement circuit - Wikipedia

   en.wikipedia.org/wiki/Automatic_number...

   An automatic number announcement circuit (ANAC) is a component of a central office of a telephone company that provides a service to installation and service technicians to determine the telephone number of a telephone line. The facility has a telephone number that may be called to listen to an automatic announcement that includes the caller's ...

3. Small Business Phone System: A Guide to Service Types ... - AOL

   www.aol.com/small-business-phone-system-guide...

   Learn about conventional and modern small business phone services, from technologies to equipment, to decide which solution is best for your company. Small Business Phone System: A Guide to ...

4. Ringback number - Wikipedia

   en.wikipedia.org/wiki/Ringback_number

   The test consists of calling a reverting calling telephone number (ringback number) or a vertical service code with a standard telephone. Upon answering the call, the exchange plays a unique signal tone as a signal for the installer to hangup the telephone. The exchange then places a reverting call to the originating line, causing the telephone ...

5. Party line (telephony) - Wikipedia

   en.wikipedia.org/wiki/Party_line_(telephony)

   A party line (multiparty line, shared service line, party wire) is a local loop telephone circuit that is shared by multiple telephone service subscribers. [ 1 ] [ 2 ] [ 3 ] Party line systems were widely used to provide telephone service, starting with the first commercial switchboards in 1878. [ 4 ]

6. Add access phone numbers to AOL Dialer

   help.aol.com/.../manually-add-access-phone-numbers

   Connect an access number to AOL Dialer. 1. Click Connection Settings from the mail AOL Dialer page and follow the prompts. 2. Enter your location and connection type and click Next. 3. Select your dialing options and click Next. 4. Enter your area code and click Next. 5. Select 2-3 access phone numbers and click Next.

7. Extension (telephone) - Wikipedia

   en.wikipedia.org/wiki/Extension_(telephone)

   The PBX operates much as a community switchboard does for a geographic telephone numbering plan and allows multiple lines inside the office to connect without each phone requiring a separate outside line. In these systems, one usually has to dial a number (typically 9 in North America, 0 in Europe) to tell the PBX to connect with an outside ...