• GEO - Geostationary Earth Orbit
• GMSK - Gaussian Minimum Shift Keying
• GPRS - General Packet Radio Service
• GPS - Global Positioning System
• GSM - Global System for Mobile Communications
• HFC - Hybrid fiber-coaxial (0334759)
• HIP - Host Identity Protocol
• HSCSD - High Speed Circuit Switched Data
• HSDPA = High Speed Downlink Packet Access
• HSUPA - High-Speed Uplink Packet Access
• HTTP - Hypertext Transfer Protocol
• HTTPS - Hypertext Transfer Protocol Secure
• IAB - Internet Architecture Board
• IANA - Internet Assigned Numbers Authority
• ICMP - Internet Control Message Protocol
• ICMPv6 - Internet Control Message Protocol for IPv6
• ID - Identification
• IEC - International Electrotechnical Comission
• IEEE - Institute of Electric and Electronics Engineers
• IESG - Internet Engineering Steering Group
• IETF - Internet Engineering Task Force
• IGMP - Internet Group Management Protocol
• IGP - Interior Gateway Protocol
• IHL - Internet Header Length
• IKE - Internet Key Exchange
• IMAP - Internet Message Access Protocol
• IP - Internet Protocol
• IPS - Internet Service Provider
• IPSec - Internet Protocol Security
• IPTV = Internet Protocol Television
• IPv4 - Internet Protocol version 4
• IPv6 - Internet Protocol version 6
• IPX - Internetwork Packet Exchange
• IRC - Internet Relay Chat
• ISATAP - Intra-Site Automatic Tunnel Addressing Protocol
• ISC - Internet System Consortium
• ISDN = Integrated Services Digital Network
• ISM-band - Industrial, Scientific and Medical radio band
• ISO - International Organization for Standardization
• IST - Internal Spanning Tree
• ITU - International Telecommunication Union
• ITU-T - ITU Telecommunication Standardization Sector

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