- C-Band
- C-Block auction
- C/I
- C/N
- Cable
- Cable signal leakage
- Cable Television Relay Service (CARS)
- California State Public Utilities Commission (CPUC)
- California Telecommunications Industry Association (CTIA)
- Call accounting system
- Call Alert
- Call alert stacking
- Call barring
- Call continuation
- Call detail record
- Call forwarding
- Call forwarding busy line
- Call forwarding don’t answer
- Call hold
- Call Line Identifier (CLI)
- Call timer
- Call waiting
- Call-in-absence indicator
- Call-in-progress protection
- Caller ID
- Calling party pays
- Cap code
- Capacity
- Capture effect
- Carrier
- Carrier recovery
- Carrier-to-interference ratio
- Carrier-to-noise ratio
- Carterfone Decision
- CDG (CDMA Development Group)
- CDMA 1X (Code Division Multiple Access)
- CDMA 2000
- CDMAOne
- CDPD (Cellular Digital Packet Data)
- CDVCC (Coded Digital Verification Color Code)
- Cell
- Cell Broadcast
- Cell Broadcast Channel (CBCH )
- Cell Site atau Base Station
- Cell Sites
- Cell Splitting
- Cellemetry
- Cellular
- Cellular Carrier
- Cellular Carriers Association of California (CCAC)
- Cellular Cassette
- Cellular Digital Packet Data Service (CDPD)
- Cellular Geographical Service Area (CGSA)
- Cellular Messaging Service
- Cellular Mobile Telephone Service
- Cellular Service
- Cellular Service Provider
- Cellular Signal
- Cellular System
- CELP (Code-Book Excited Linear Predictive)
- Central Office (CO)
- Channel
- Channel equalization
- Charge Back
- Chip Set
- Churn
- CIF (Common Intermediate Format)
- Cigarette Lighter Adapter
- Cipering
- Circuit
- Circuit Switched
- Circuit Switching
- Circulation
- ClassLink
- Clear Channel
- Clearing an Alert
- Click-box Bidding
- Clock recovery
- Clone
- Closed Circuit Television (CCTV)
- CMRS (Commercial Mobile Radio Service)
- Co-Branding
- Co-channel interference
- Co-location
- Co-location Issues
- Code Division Multiple Access (CDMA)
- Code Domain Power (CDP)
- Codebook
- CODEC (Coder/Decoder)
- Coding gain
- Coherent detection
- Coil Cord
- Color-Coded Status Messages
- COLT (Cell Site on Light Truck)
- Common Air Interface (CAI)
- Common Carrier
- Communications Assistance to Law Enforcement Act (CALEA)
- Communications Satellite
- Companding (Compressing and Expanding)
- Competitive Access Provider (CAP)
- Competitive Bidding
- Competitive Local Exchange Carrier (CLEC)
- Complementary Cumulative Distribution Function (CCDF)
- Component
- Computer
- Computer Mail System
- Computer-Aided Dispatch (CAD)
- COMSAT (Communication Satellite Coorporation)
- Concatenated coding
- Console Digital Display
- Constellation
- Consumer Premise Equipment (CPE)
- Content Service
- Control Channel (CCH)
- Control head
- Control Head Mount
- Convergence
- Convolutional code
- Cordless
- Cost Recovery
- COST-231
- Coverage area
- Coverage hole
- Covered SMR
- COW (Cell Site On Wheel)
- CPM (Continuous Phase Modulation)
- CPNI (Customer Proprietary Network Information)
- CRC (Cyclic Redundancy Code)
- Cross correlation
- Cross Talk
- CT-2 (Cordless Telephone 2)
- CTIA (Cellular Telecommunications Industry Association)
- Cumulative Distribution Function (CDF)
- Customer Acquisition Cost
- CW (Continuous Wave)
- Cyclic codes
C
