CIC (Carrier Identification Code)

In the United States, a four-digit code (XXXX) that identifies

the interexchange carrier (IXC) the subscriber has pre-selected for interstate long distance calling purposes. The CIC allows the originating local exchange carrier (LEC) to identify and hand off the call to the correct interstate IXC.The CIC is part of the Carrier Access Code (CAC) that subscribers can use to dial around pre-subscribed carriers. See also CAC, IXC, and LEC.

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• Appendix A: Standards Organizations
• application
• Application Layer
• application processor (AP)
• application program interface (API)
• application programming interface (API)
• Applications
• application service provider (ASP)
• application software
• application-specific integrated circuit (ASIC)
• appointment call
• APS (Automatic Protection Switching)
• aramid (aromatic polyamide)
• Archie
• architecture
• archiving
• ARCNET (Attached Resource Computer NETwork)
• area code
• area code
• area code
• ARIN (American Registry for Internet Numbers)
• arithmetic coding
• arithmetic logic unit (ALU)
• armored cable
• .arpa (address routing and parameter area)