Telecom Glossary N1

NPA - Numbering Plan Areas

North American "Area Codes." (3 digits: 2-to-9, 0-or-1, 0-to-9. Middle digit to expand soon)

NPA-NXX Routing

Area Code / Exchange Routing. Route calls based on the originating ANI NPA-NXX.

NPA Routing

Area Code Routing. Route calls based on the originating ANI NPA (area code.)

NPA Split

Subdividing an area code, with the creation of a new area code. This is necessary when the number of telephones in an area code (NPA) grows to an excessive number.

Long Distance Glossary (A-1) (A-2) (A-3) (B-1) (B-2) (B-3) (B-C) (C-1) (C-2) (C-3) (C-4) (C-5) (C-6) (C-7) (C-8) (D-1) (D-2) (D-3) (D-E) (E-F) (F-1) (G-1) (H-I) (I-1) (I-2) (I-3) (I-4) (J-L) (L-1) (L-2) (L-3) (L-M) (M-N) (N-1) (N-O) (O-1) (O-P) (P-1) (P-2) (P-3) (P-4) (P-5) (P-R) (R-1) (R-2) (R-3) (S-1) (S-2) (S-3) (S-4) (S-T) (T-1) (T-2) (T-3) (T-4) (T-5) (T-6) (T-U) (V-1) (V-2) (V-Z)