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| North American Numbering Plan (NANP). |
The North American Numbering Plan (NANP) was invented in 1947 by AT&T and Bell Laboratories. It conforms to the International Telecommunications Union Recommendation e.164, the international standard for numbering plans. The NANP is the numbering plan for the Public Switched Telephone network (PSTN) in the United States and its territories, Canada, Bermuda, and many Caribbean nations. NANP numbers are 10 digits in length, and they are in the format NXX-NXX-XXXX, where N is any digit 2-9 and X is any digit 0-9. The first three digits are called the numbering plan area (NPA) code, often called simply the area code. The second three digits are called the central office code or prefix. The final four digits are called the line number. |
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| Negative Relationship |
Relationship between two variables such that when the value of one variable increases the value of the second decreases. In a plotted regression equation, the regression line will slope downward as viewed from the point of origin. |
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| Network Port |
Connects an IP device to the network. |
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| Network Trunk Group |
A group of trunks to which a routing client can direct calls. A peripheral may divide its trunks into trunk groups differently than the routing client does. Simple trunk groups describe the peripheral’s view of the trunks, network trunk groups describe the routing client’s view of the trunks. |
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| Next Available Agent |
The practice of routing the first contact in queue to the first available agent, maintaining an equitable workload among agents. If no queue exists, contacts are routing the agent idle the longest. |
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| Non-Contact |
An attempted contact that results in something other than a live answer (busy signal, no answer, automated answer, etc.) |
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| Nuisance Call |
The situation that occurs when a live contact is made with a potential customer, but no live agent is available to match up with the call, resulting in dead air space to the customer. |
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