message is often used even if no new number has replaced the old one. A similar intercept occurs if a number has recently been unlisted; no new number is provided: 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 a fast busy signal follows the second reading of the message instead. Incorrect number dialed A different intercept message is used when the caller has dialed a number the first three digits of which have not yet been assigned within that area code. This message, too, formerly varied by locality; the following was used in New York City in the 1960s: The standard version of this message in use today is the following. This is used when the three-digit exchange does not exist in that area code. Most of these messages often include the phrase "Your call cannot be completed as dialed." Sometimes a message would say to first dial a 1 or a 0 (the toll prefix for a trunk call) plus the area code of the called number. A message may also be played when 0 or 1 followed by an area code is prepended unnecessarily on landline phone calls to local destinations. As of 2021, area code dialing is required even for local calls, making the "not necessary to dial a 1 or 0" message no longer relevant. Toll-free number calling area As the owner of a toll-free telephone number must pay to receive all long-distance calls (including misdialed calls), a toll-free subscriber may request that the responsible organization for a toll-free number (often but not always the inbound long-distance carrier) configure the number to only be reachable from specific area codes, from within one province or state or from specified cities. (The original Bell System InWATS used wide multiple-state or province "bands" as calling areas; modern systems route more finely.) In Canada, this message is translated: "Le numéro que vous avez composé n'est pas disponible de votre région". The announcement is repeated, then followed by a numeric identifier. Network congestion AT&T has an intercept message that is heard due to network congestion: "All circuits are busy now, please try your call again 914-2T". The number and digits at the end identify the network edge or Tandem switch the caller's local exchange company routed the call to. There is also