handoffThis occurs when information on positions, velocities and tracks are given by one sensor or system to another and the first sensor or system continues to…
HeaderA masonry wall unit of brick which is laid so that its short end is exposed.
HealthyOne of four health states of a storage group copy. Healthy indicates that the passive copy of a storage group can be advanced by log replay.
heartbeat intervalThe amount of time that can elapse before the Exchange server asks a mobile device running Exchange ActiveSync to connect again. [Exchange 2007]
heuristic attributeThis attribute enables envelope journaling at the Exchange organizational level.
hierarchical namingA system of naming associated with IBM® Lotus® Notes® IDs that reflects the relationship of names to the certifiers in an organization.
hierarchical viewA view that distinguishes between main documents and response documents. Each main document has its response documents indented under it.
HIPAA Privacy RuleA rule issued by the U.S. Department of Health and Human Services to implement the privacy requirements of the Health Insurance Portability and…
home pageMain page of a Web site. Usually has hyperlinks to other pages, both inside and outside the site.
home serverThe Exchange server that contains a user's mailbox.
hopAn intermediate stop on the path along which mail is routed when the sender's server and recipient's server are not directly connected.
HTTP (HyperText Transfer Protocol)The underlying protocol used by the World Wide Web. HTTP defines how messages are formatted and transmitted, and what actions Web servers and browsers…
Hub Transport server roleAn Exchange Server 2007 server role that provides routing within a single organizational network by using the Active Directory directory service site.
hunt groupA group of servers that are assigned one phone number. Clients dial the one phone number and connect to any available server.