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Terms You Need to Know
- 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.
PIC - Primary Interexchange Carrier
- The IEC that 1+ calls are routed to. Specified by ANI.
PIC Charges
- A LEC charge for changing the PIC. Often paid by the new
IEC. If a LEC sends a PIC charge to a customer, the new IEC will typically credit the customer's account.
PIC Freeze
- A PIC Freeze prevents the long distance from being switched for the specified ANIs. Useful to prevent slamming, or the unauthorized switching of long distance services.
PIC Request
- A request record sent to a LEC asking for an ANI to be activated, deactivated or changed in some way.
PIC Response
- A response record sent by a LEC (corresponding to a previous PIC Request) with a response code that indicates whether the request was performed. (Some LECs return non-standard PIC Response codes.)
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