H	Hidden
H-DMA	Host -Dormant Monitoring Agent
H-PA	Host -Paging Agent
H-TA	Host -Tracking Agent
H2	host 2
HA	High Availability
HA	home agent
HAC	Home Agent Controller
HAN	Home Area Network
HAO	Home Address Option
HAP	Host Access Protocol
HARP	HIPPI Address Resolution Protocol
HAS	HTTP Adaptive Streaming
HAV	Hash Assist Value
HBA	Hash-Based Addresses
HBA	Host Bus Adapter
HBH	Hop-by-Hop
HBR	High bitrate range
HC	High capacity
HC	header compression
HCF	Hybrid Coordination Function
HCI	Healthcare Communications, Inc.
HCO	header checksum only
HCO	hearing carry over
HD	Handling Directive
HD	Header Decompression
HD	High Definition
HD	Host Density
HDAF	Home Domain Allocation Function
HDM	Hierarchical Development Methodology
HDR	High Dynamic Range
HE	Head End
HEC	Header Error Check
HEC	Header Extension Content
HEL	Header Extension Length
HELD	HTTP Enabled Location Delivery
HELD	HTTP-Enabled Location Delivery
HEMS	HighLevel Entity Management System
HERFP	Heterogeneous Error Response Forking Problem
HET	Header Extension Type
HF	Handshake Flag
HFA	Hierarchical Foreign Agent
HFC	Hybrid Fiber Coax
HFC	hybrid fiber-coaxial
HFSC	Hierarchical Fair Service Curve
HG	home gateway
HI	Handoff Indicator
HI	Handover Initiate
HI	Host Identity
HIH	Host Identity Hash
HIP	Host Identify Protocol
HIP	Host Identity Protocol
HIRP	HFCL-IISc Research Project
HIT	Host Identity Tag
HK	Hong Kong
HLA	High Level Architecture
HLP	Home Link Prefix
HLR	Home Location Registry
HLS	HTTP Live Streaming
HMAC	Hash Message Authentication Code
HMAC	Hashed Message Authentication Code
HMAC-MD5	Hashed Message Authentication Codes -Message Digest 5
HMP	Host Monitoring Protocol
HMP	Hotspot Mitigation Protocol
HMSV	Highest mutually supported version
HMVD	Horizontal motion vector data
HN	Host name
HNCP	Home Networking Control Protocol
HNP	Home Network Prefix
HNT	Hosted NAT Traversal
HOBA	HTTP Origin-Bound Authentication
HOLB	Head-of-line blocking
HP	higher-priority
HPC	High-Performance Computing
HPKP	HTTP Public Key Pinning
HPR	High Performance Routing
HPR	High-Performance Routing
HQ	High Quality
HR	Human Resources
HRAL	HARP Request Address List
HRD	hypothetical reference decoder
HRPC	Human Rights Protocol Considerations
HRPD	High Rate Packet Data
HRPF	Hexadecimal reference publication format
HRW	Highest random weight
HSCSD	High Speed Circuit-Switched Data
HSDPA	High-Speed Downlink Packet Access
HSI	High Speed Internet
HSM	hardware security module
HSN	Hello Sequence Number
HSPA	High-Speed Packet Access
HSRP	Hot Standby Router Protocol
HSS	Hierarchical Signature System
HSS	Home Subscriber Server
HSTS	HTTP Strict Transport Security
HT	Hello Timer
HT	Holding Time
HT	Horizontal Tab
HTCPCP	Hyper Text Coffee Pot Control Protocol
HTM	Host Traffic Matrix
HTT	Handoff to Third