C

CA

Conditional Access

CATV

Community Antenna Television.

C Band

Satellite communications frequency band.

CBR

Constant Bit Rate

CCD

Charge Coupled Device

CCTV

Closed Circuit Television.

CDMA

Code Division Multiple Access. 

CDN

Content Distribution Network, or Content Delivery Network.

CIF

Common Image Format.

CIFS

Common Internet File System.

CMAF

Common Media Application Format.

C/N

Carrier to Noise (ratio).

COTM

Communications On The Move.

COTP

Communications On The Pause.

CPU

Central Processing Unit.