Switched Local Access Configuration

Switched local access to a network requires a call setup process, such as that found with POTS/PSTN or ISDN-BRI/PRI service. Access to the service provider's network is dependent on the dialed digits of the end-user or programmed PBX.

The customer can access a NSP's LD network in one of two ways, using either a Prescribed Interchange Carrier (PIC) or Carrier Identification Code (CIC). The PIC code is the IXC the customer/end-user designates to carry all 1+10-digit long-distance calls. The CIC is used when the customer/end-user wants to tell the LEC which carrier to use for 1+ service, either via presubscription or casual dialing. Casual dialing is when the customer/end-user dials the 7-digit CIC prior to the 1+10-digit dialed number, such as dialing 10-10-228-1-703-555-1212.

Appendix A "PIC Codes," lists the PIC/CIC codes available for use as of 6/1/2002.