| Subject | English | Thesaurus |
| IT, abbr. | Advanced Communication Function / Network Control Program | ACFNCP (IBM, ACF) |
| IT, abbr. | Advanced Communication Function / Network Control Program | ACF/NCP (IBM, ACF) |
| IT | advanced communication function/network control program | ACF/NCP (ssn) |
| IT, abbr. | Advanced Communications Technologies and Services | ACTS (EU, ACTS) |
| abbr., IT | Advanced Communications Technologies and Services | ACTS |
| IT, abbr. | Advanced Program to Program Communication | APPC (IBM) |
| IT, abbr. | Advanced Program to Program Communications Protocol | APPCP (APPC, IBM) |
| abbr. | Advanced Program-to-Program Communication | APPC (Vosoni) |
| abbr., comp., MS | Advanced Program-to-Program Communication An IBM Systems Network Architecture communications method that uses the LU 6.2 protocol to establish, manage, and terminate network communication between programs in a distributed computing environment | APPC (Advanced Program-to-Program Communication) |
| abbr., comp., MS | Advanced Program-to-Program Communication File Transfer Protocol A file transfer protocol used in IBM host systems, the IBM Advanced Program-to-Program Communications equivalent to the TCP/IP File Transfer Protocol | AFTP (Advanced Program-to-Program Communication File Transfer Protocol) |
| abbr., file.ext. | Advanced Program-to-Program Communications | APPC (IBM) |
| abbr., comp., net. | Advanced Program-to-Program Communications | APPC |
| abbr., IT | Advanced Program-to-Program Communications File Transfer Protocol | AFTP |
| abbr., mil., BrE | Aeronautical Services Communications Centre | ASCC |
| relig., abbr. | Affinity Reality Communication | ARC |
| abbr., scottish | Airways & Air Communications Services | AACS |
| univer., abbr. | Applied Communication Program | ACP |
| abbr., IT | Backplane Communication Services | BCS |
| abbr., file.ext. | Common Communications Services | CCS |
| busin., abbr. | Communication And Technology Services | CATS |
| IT, abbr. | Communication Application Program Interface | CAPI (ISDN, API) |
| abbr., comp., net. | Communication Platform Services | CPS |
| mil., abbr. | Communication Services | CS |
| abbr., astronaut., mil. | Communications Configuration Implementation Program | CCIP |
| IT, abbr. | Communications Control Program | CCP (OS, IBM) |
| IT, abbr. | Communications-electronics Accommodation Program | CAP |
| mil., abbr. | Communications-Electronics Program Management Instructions | CEPMI |
| mil., abbr. | Communications Intelligence Program | CIP |
| abbr., sec.sys. | Communications Programs Unit | CPU (ANG) |
| abbr., comp., net. | Communications Services Manager | CSM |
| abbr., scottish | Communications System Segment Replacement programme | CSSR (USAF) |
| mil., abbr. | Communications Transition Working Group | CTWG |
| abbr., scottish | Co-ordination, Control, Communications & Intelligence Center | C3IC (USA) |
| st.exch., abbr. | Cosine Communications, Inc. options | KUK |
| tradem., abbr. | Creative Communications Services | CCS |
| abbr., scottish | Defense Satellite Communications Program | DSCP (USA) |
| mil., abbr. | Defense Satellite Communications Program | DSCP |
| mil., abbr. | Defense Satellite Communications System Service Life Enhancement Program | DSC-SLEP |
| mil., abbr. | Defense Satellite Communications Systems Application Program | DSAP |
| mil., abbr. | Department of the Army Communications Reserve Program | DACRP |
| UN, abbr. | Development Training Communication Programme | DTCP |
| tradem., abbr. | Domino Unified Communications Services | DUCS |
| abbr., scottish | Echelon Above Corps Communications Improvement Program | EAC-CIP (US Army) |
| abbr., scottish | European Military Communications Co-ordinating Committee | EMCCC |
| st.exch., abbr. | Exodus Communications, Inc. Options | WZZ |
| abbr., file.ext. | Extended Services Communications Manager | ESCM (IBM) |
| comp., net., abbr. | Fipa Agent Communication Technologies And Services | FACTS |
| ocean., abbr. | High Performance Computing and Communications Program and Information Technology | HPCC |
| abbr., scottish | High Performance Computing & Communications programme | HPCC (USA) |
| abbr., scottish | Information Communication Services | ICS |
| abbr., scottish | Initial Defense Communications Satellite Program | IDCSP (USA) |
| mil., abbr. | Initial Defense Communications Satellite Program | IDCSP |
| mil., abbr. | Initial Defense Communications Satellite Program - Augmented | IDCSP-A |
| mil., abbr. | Initial Defense Satellite Communication Program | IDSCP |
| NYSE., abbr. | Insight Communications Company, Inc. options | QJQ |
| comp., abbr. | Integrated Communication Services | ICS |
| abbr., astronaut. | International Programme for the Development of Communication | IPDC |
| abbr., scottish | Jam-Resistant Secure Communications programme | JRSC |
| abbr., mil., BrE | Joint Services Communications Centre | JSCC |
| abbr., nautic. | Marine Communication and Traffic Services | MCTS (Venita) |
| abbr., astronaut. | Mobile Satillite Communications via the TDRSS programme | MOST |
| telecom., abbr. | NetWare Asynchronous Communication Services | NACS (NetWare) |
| comp., net., abbr. | Netware Asynchronous Communication Services | NACS |
| abbr., comp., net. | NetWare Asynchronous Communications Services | NACS |
| IT, abbr. | Network Communications Services Interface | NCSI (Network Products Corp.) |
| abbr., scottish | Norwegian Defence Communications & Data Services Administration | NODECA |
| comp., abbr. | Personal Communication Services | PCS |
| abbr., file.ext. | Personal Communication Services/System | PCS |
| abbr., comp., net. | Personal Communications Services | PCS |
| mil., abbr. | Personal Communications Services/Universal Personal Telecommunications | PCS/UPT |
| IT, abbr. | Program Communication Block | PCB (IBM) |
| mil., abbr. | Program Executive Officer for Command, Control, Communications, Computers, and Intelligence | PEOC4I |
| mil., abbr. | Program Manager, Multi-Service Communications System | PMMSCS |
| comp., abbr. | Program- Operator Communication | POC |
| IT, abbr. | Program to Program Communication | PPC (Apple) |
| comp., net., abbr. | Program To Program Communications | PPC |
| IT, abbr. | Programmable WorkStation Communication Services | PWSCS |
| abbr., scottish | Saudi Naval Expansion Programme, Communications | SNEP-C |
| lit., abbr. | Speech Communication Interaction Program | SCIP |
| abbr., scottish | Submarine Laser Communications programme | SLC (USA) |
| abbr., scottish | UHF Follow-On communications satellite programme | UFO |
| mil., abbr. | U.S. Joint Tactical Communications Program | TRI-TAC |
| st.exch., abbr. | USN Communications, Inc. options | QZS |
| mil., abbr. | Voice Communications Services | VCS |
| telecom., abbr. | Wireless Communication Services | WCS |
| telecom., abbr. | Wireless Personal Communications Services | WPCS |
| st.exch., abbr. | XO Communications, Inc. options | QNF |
