Long Distance Services
Kerstin Peterson · 2000
The North American Numbering Plan (NANP), International Calling, The Presubscribed Interexchange Carrier (PIC), Charge CIC (Carrier Identification Codes) and Dial-Around, Toll-Free Services, and How to Buy Long Distance Services Long distance systems are a network of switching systems and cir cuits that haul telephone traffic between local exchange areas (Local carriers are called LEC for Local Exchange Carriers or, if they used to be Bell-related, ILEC for Incumbent Local Exchange Carrier.). Long distance carriers are usually called IXC or Interexchange Carriers.