numbering plan administration (NPA)

See NPA.

• hoot ’n’ holler
• hop
• hop sequence
• horizontal cable
• host
• hosted PBX
• hot spare
• hotspot
• hot standby
• HSCSD (High-Speed Circuit Switched Data)
• HSDPA (High Speed Downlink Packet Access)
• HSDPA (High Speed Downlink Packet Access)
• H Series
• H Series
• HSUPA (High Speed Uplink Packet Access)
• HTCPCP (Hyper Text Coffee Pot Control Protocol)
• HTML (Hypertext Markup Language)
• hub
• Huffman coding
• Huh?
• human
• hunt
• hunt group
• Hush-a-Phone Decision
• Hush-a-Phone Decision