H 907Programming Operations Guidehard diskA data storage device that uses rigid magnetic disks permanently installed inside thecomputer CPU or a portable unit.HDLCHigh-level Data Link Control (HDLC) is a group of protocols or rules for transmittingdata between network points or nodes. Data is organized into a unit, called a frame, andsent across a network to a destination that verifies its successful arrival. The HDLCprotocol also manages the flow or pacing at which data is sent. HDLC is one of the mostcommonly-used protocols in Layer 2 of the industry communication reference model,Open Systems Interconnection (OSI).held line reminderA telephone rings and displays the message On hold: LINENAM when you place anexternal call on hold for programmed period of time. Set the Held Line Reminder underFeature settings. (Services, Telephony Services, General Settings).High-level Data Link ControlSee HDLC.HLCThe Home Location Code (HLC), also known as a Location code (LOC) is used as part ofa UDP dialing plan to identify each node on a private network.Hold buttonUse this button to interrupt calls so that you can perform another task withoutdisconnecting the caller.Home Location CodeSee HLC and location code.hookswitch FlashSee Link.hospitality servicesThese features allow a hostelry to use room and desk telephones to communicatehousekeeping and alarm information between each room and the front desk (admintelephone), including setting call restrictions at different levels for each room. Thetelephones also have all configured system call capabilities.host nameIn networking, this is the name of a computer that provides services, such as databaseaccess, to other computers or Business Communications Manager base units in thedomain. Computers with a host name also have a unique IP address. Because the BusinessCommunications Manager base unit has a unique IP address, the BusinessCommunications Manager base unit qualifies as a host.
