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hacker
- Term for a person who has a high level of knowledge of IT security mechanisms and their vulnerabilities, is involved in hacks and sometimes even carries them out ("hacks")
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handover
- A mobile end device switches from one radio cell to another during a call or data connection
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handset
- Mobile end device (telephone) in a cordless (DECT) telephone system
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hardware appliance
- A hardware platform for implementing stand-alone software
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hardware upgrade
- The upgrading or modification of an existing hardware base, e.g. by adding another COMpact NET module
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HD audio
- HD audio (G.722) enables better quality voice transmission with a frequency range of approximately 20 to 8,000 Hz
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HDSP
- Meaning: "High Definition Sound Performance" (a Gigaset trademark)
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headset
- A headset usually consists of one or two speakers (headphones) and a microphone
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headset connection
- A separate socket on the telephone for a headset
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high end
- A superior, better than average technical standard
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high level
- A high performance level
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hook switch
- On a traditional desk telephone, this is a mechanical switch contact that operates when the receiver is picked up or put down; in more modern telephones, this is a magnetic/electronic switch
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hookswitch
- On a traditional desk telephone, this is a mechanical switch contact that operates when the receiver is picked up or put down; in more modern telephones, this is a magnetic/electronic switch
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https
- Abbreviation for Hypertext Transfer Protocol Secure, allows encrypted connections to be established on the Internet to protect sensitive data from unauthorised access
