| Abbreviation | Definition |
|---|---|
| CCIS | Common Channel Interoffice Signaling |
| CCL | Connection Control Language |
| CCM | Change Control Management |
| CCM | Client Connection Manager |
| CCMC | Cross Country Mic Controllers |
| CCNA | Cisco Certified Network Associate |
| CCNE | Cisco Certified Network Engineer |
| CCNP | Cisco Certified Network Professional |
| CCO | Cisco Connection Online |
| CCOP | Converged Communications Outsourcing Project |
| CCP | Client Client Protocol |
| CCP | Client to Cllient Protocol |
| CCP | Collaborative Computational Project |
| CCPS | Capps Certified Process Server |
| CCQ | Client Connection Quality |
| CCRF | Cable Change Request Form |
| CCRP | CERNET + Cisco Research Program |
| CCS | Common Channel Signaling |
| CCVP | Cisco Certified Voice over ip Professional |
| CCX | Cisco Compatible Extensions |