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Telecom Glossary L3


Local Exchange Carrier - LEC
The local or regional telephone company that owns and operates lines to customer locations and Class 5 Central Office Switches. LECs have connections to other COs, Tandem (Class 4 Toll) offices and may connect directly to IECs like WorldCom, AT&T, MCI, Sprint, etc.

Local Exchange Service
Local phone calls.

Local Loop
Communications lines and services between the telephone subscriber and the phone company switching center.

Long Distance Carrier
A company providing long-distance phone service between LECs and LATAs.


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)

[0000 - 999Z] [999Z - ALEZ] [ALEZ - ATLZ] [ATLZ - BESZ] [BESZ - CALZ]
[CALZ - CELZ] [CELZ - CHEZ] [CHEZ - COMZ] [COMZ - CREZ] [CREZ - DIRZ]
[DIRZ - DRAZ] [DRAZ - FINZ] [FINZ - FRDZ] [FRDZ - FREZ] [FREZ - HEAZ]
[HEAZ - INSZ] [INSZ - LAPZ] [LAPZ - LONZ] [LONZ - MITZ] [MITZ - NETZ]
[NETZ - OPTZ] [OPTZ - PHOZ] [PHOZ - PROZ] [PROZ - SANZ] [SANZ - SMAZ]
[SMAZ - TAMZ] [TAMZ - TONZ] [TONZ - WATZ] [WATZ - WINZ] [WINZ - ZZZZ]
[XXXX - XXXX] [XXXX - XXXX] [XXXX - XXXX] [XXXX - XXXX] [XXXX - XXXX]
[XXXX - XXXX] [XXXX - XXXX] [XXXX - XXXX] [XXXX - XXXX] [XXXX - XXXX]

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