- 1080 Interlaced
- Anycast
- Application-Defined Networking
- Audio Messaging Interchange Specification
- Autonomic Network
- Basic Rate Interface
- Business Support System
- CAP Theorem
- ChatOps
- Christmas Tree Packet
- Circuit Switching
- Click-To-Callback
- Communications Over Internet Protocol
- Concentrator
- Conference Call
- Data Management Platform
- Data Redundancy
- Data Streaming
- DECnet
- Desktop Video Conferencing
- Distributed System
- Electronic Switching System
- Enterprise Instant Messaging
- Enterprise Network
- Enterprise Network Monitoring
- Error Control
- Ethernet Industrial Protocol
- Fax Over Internet Protocol
- Feed Line
- Frame Relay
- Frequency Modulation Synthesis
- General Switched Telephone Network
- H.323
- Home Directory
- Hosted Private Branch Exchange
- Hosted Services
- Hundred Call Seconds
- Hybrid Unified Communications and Collaboration
- Information Dispersal Algorithms
- Intelligent Network
- Intelligent Network Application Part
- Intercloud
- IP Centrex
- IP Datacasting
- ITU Telecommunications Standardization Sector
- Key Telephone System
- Latency
- Layer 8
- Link Aggregation Control Protocol
- Link Budget
- Local Exchange Carrier
- Mobile Instant Messaging
- Modbus
- Modbus TCP/IP
- Multiple Points of Presence
- Network Based Application Recognition
- Network Intelligence
- Network Latency
- Network Segmentation
- Numbering Plan
- Object Transaction Service
- OneAPI
- Primary Rate Interface
- Printer Sharing
- Private Branch Exchange
- Protocol Converter
- Pseudowire
- Pulse Amplitude Modulation
- Real Time Streaming Protocol
- Real-Time Transport Protocol
- Remote Direct Memory Access
- Satellite Navigation
- Session Initiation Protocol Trunking
- Short Message Service
- Silent Monitoring
- Simple Network Management Protocol Version 2
- Single-Pair High-Speed Digital Subscriber Line
- SMS Gateway
- SMS Phishing
- Softphone
- Software Handshaking
- Software-Defined Everything
- Telepathology
- Telephony
- Transparency
- Unified Communications as a Service
- Unified Communications System
- Unified Messaging
- Unified Messaging System
- Unified Storage
- Voice Over Internet Protocol
- Voice Over Wireless Local Area Network
- Wide Area Telephone Service
- Wi-Fi Positioning System
- Wrapper
