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  2. Call forwarding - Wikipedia

    en.wikipedia.org/wiki/Call_forwarding

    Call forwarding is often enabled by dialing *72 followed by the telephone number to which calls should be forwarded. Once someone answers, call forwarding is in effect. If no one answers or the line is busy, the dialing sequence must be repeated to effect call forwarding. Call forwarding is disabled by dialing *73.

  3. Intercept message - Wikipedia

    en.wikipedia.org/wiki/Intercept_message

    The number you have reached, old number, has been changed to a non-published number. [ 3 ] In the past, the call would be forwarded to an intercept operator after usually two readings of the message; today, however, this procedure is not observed, and on some systems a fast busy signal follows the second reading of the message instead.

  4. Remote call forwarding - Wikipedia

    en.wikipedia.org/wiki/Remote_call_forwarding

    Remote call forwarding is also a means for a suburban business to obtain a city-centre local number (with its full large-city coverage area) for inbound calls; while cheaper than a foreign exchange line, this can reduce long-distance telephony costs in markets where local calls are flat-rated but trunk calls are expensive.

  5. Forwarding - Wikipedia

    en.wikipedia.org/wiki/Forwarding

    Call forwarding, a telephony feature that allows calls to one phone number to be forwarded to another number Remote call forwarding, a telephony feature that allows call forwarding to be activated remotely; Cisco Express Forwarding, an advanced layer 3 switching technology used mainly on the enterprise core network or the Internet

  6. Routing in the PSTN - Wikipedia

    en.wikipedia.org/wiki/Routing_in_the_PSTN

    The telephone number may be subdivided into a prefix that may identify a more specific geographic location or a telephone exchange, and the rest of the number. For example, in the number (301) 555-1212, 301 is the area code and 555 is the prefix. (The area code is sometimes known as an "NPA," and the area-code and prefix combination is known as ...

  7. Add or disable 2-step verification for extra security - AOL Help

    help.aol.com/articles/2-step-verification...

    We'll send you a text or call you with a new code that needs to be entered at sign-in. The phone number we contact you with may be different each time. Enable 2-step for phone. 1. Sign in to your Account Security page. 2. Next to "2-Step Verification," click Turn on. 3. Select Phone number for your 2-step verification method. 4.

  8. Call waiting - Wikipedia

    en.wikipedia.org/wiki/Call_waiting

    At first, some smaller municipalities were able to offer customers call waiting only on a specific phone exchange (e.g., phone customers in Trenton, Michigan initially had to have a phone number starting with 671 to have call waiting, since 671 was at that time the only exchange in that area served by one of the new ESS switches), but as demand ...

  9. Virtual number - Wikipedia

    en.wikipedia.org/wiki/Virtual_number

    A virtual number, also known as direct inward dialing (DID) or access numbers, is a telephone number without a directly associated telephone line. Usually, these numbers are programmed to forward incoming calls to one of the pre-set telephone numbers, chosen by the client: fixed, mobile or VoIP. A virtual number can work like a gateway between ...