Cable modem CAMEL Carrier Carrier aggregation C-band CBC CBE CCSA CDMA CDMA2000 cdmaOne CDPD Cell Cell breathing Cell Broadcast Cellular network CEPT CGC Channel CHAP Cheapernet Churn CIBER CIF Ciphertext Circuit-switched connection Circuit switching Circuit transfer mode CMX CNG Codec COFDM Cognitive Radio Comfort Noise Connectivity Contention ratio Copernicus Core network COSPAS-SARSAT Coverage Coverage area CPP Crawler CRM CSFB CSMA CSMA/CD CVCD