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- NANPA (North American Numbering Plan Administration)
- NANP (North American Numbering Plan)
- A numbering architecture in which every station in the area served by the plan is identified by a unique ten-digit address consisting of a three-digit NPA code, a three digit central office code of the form NNX/NXX, and a four-digit line number of the form XXXX.
- NAT (Network Address Translation)
- A hardware device currently being developed and used to extend the Internet addresses already in use. NAT has been suggested as an alternative to adopting IPv6 (IPng). It allows duplicate IP addresses to be used within a corporation and unique addresses outside.
- NID (Network Interface Device)
- The point of demarcation between the end user's inside wiring and LEC's facilities. Same as a NIU (Network Interface Unit).
- NIU (Network Interface Unit)
- Same as a NID (Network Interface Device), it serves as the point of demarcation between the local exchange carrier network and the customer's premise. It is required to be placed at the MPOE (minimum point of entry) which is typically in the basement, first floor telco room, garage, or even outside the building. NIUs are multi-functional devices, which include a protector block to prevent high-voltage surges from affecting premise equipment and inside wiring. It also usually allows the carrier to initiate a loop-test back from the central office to test the integrity of the local loop. A local exchange carrier will never install an NIU at an extended demarc - this is in their tariffs.
- Non-Facilities Based CLECs
- Those CLECs which do not directly own, control, operate, or manage conduits, ducts, poles, wires, cables, instruments, switches, appurtenances or appliances in connection with or to facilitate communications within the local exchange portion of the public switched network.
- Non-published Service
- The CPUC considers non-published service to be when a subscriber requests that their name, address, and telephone number not be listed in any telephone directory, street address directory, or in the directory assistance records available to the general public (411).
- NPA (Numbering Plan Area also called area code)
- An NPA is the 3-digit code that occupies the A, B, and C positions in the 10-digit NANP format that applies throughout the area served by the NANP. NPAs are of the form NXX, where N represents the digits 2-9 and X represents any digit 0-9. In the NANP, NPAs are classified as either geographic or non-geographic.
- NPAC (Number Portability Administration Center)
- A center, which supports the implementation of Local Number Portability (LNP).
- NPAC SMS (Number Portability Administration Center Service Management System)
- NPAC's system that manages the porting of telephone numbers from one service provider to another.
- NXX
- N is any digit 2 through 9, X is any digit 0 through 9 (800 possible combinations). Also known as CO codes, or DRD (destination code) once entered into the RDBS records.
- NXX Service Area
- The geographically-bounded area designated as the area within which a LEC or CLC may provide local exchange telecommunication services bearing a particular NPA-NXX designation.
- OCN (Operating Company Number)
- Assignments must uniquely identify the applicant. Must have a CO number to get this, but prior to a CO number you can use a NECA assigned number called a Company Code by calling NECA at 201-884-8355. To get an OCN call NECA at 973-884-8355.
- PBX (Private Branch Exchange)
- PBXs are computerized on site telephone systems located at commercial premises. They route calls both within an organization, and from the outside world to people within the organization.
- Port
- When used as a noun, a port (also known as a basic level network access channel connection) is the interface between the local loop and the appropriate LEC Central Office switching equipment.
- PSAP (Public Safety Answering Point)
- The central point where the 911 call is received and responded to.
- PSTN (Public Switched Telecommunications Network)
- The PSTN is composed of all transmission and switching facilities and signal processors supplied and operated by all telecommunications common carriers for use by the public. Every station on the PSTN is capable of being accessed from every other station on the PSTN.
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