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Norstar Glossary of Terms Definitions for Norstar-specific and general telephony terminology used in Northern Telecom documentation.

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A Attendant The primary reception telephone, typically extension 21. Receives all unanswered incoming calls. Auto Attendant An automated answering system (in Flash or CallPilot) that greets callers and routes them by keypad input. Autodial A programmable button that dials a stored number or activates a feature with a single press.  B BLF Busy Lamp Field. LED indicators showing the in-use or idle status of extensions. Found on the M7324 and DSS modules.  C CallPilot Northern Telecom's advanced server-based voicemail and unified messaging platform. Successor to Norstar Flash. CICS Compact Integrated Communications System. The modular small-business Norstar KSU; expandable up to 8 lines / 24 stations. CLID Calling Line Identification. Caller ID service. Displays the incoming caller's number on the telephone set display. CO Line Central Office Line. An external telephone line provided by the telephone company, connecting the KSU to the public network. Conference A 3-party call where all three parties can hear and speak to each other simultaneously.  D DID Direct Inward Dial. A service providing individual external phone numbers that ring directly to specific extensions. DISA Direct Inward System Access. Allows remote callers to dial into the system and then place outbound calls through the KSU. DN Directory Number. The internal extension number assigned to a telephone set or feature (e.g., DN 221 for extension 221). DND Do Not Disturb. A feature preventing a set from ringing. Activated/deactivated with Feature 70. DSS Direct Station Select. An add-on module for the M7324 providing one-touch buttons for each extension with BLF indicators.  F Feature Code A numbered code entered by pressing the Feature button followed by digits to activate a telephone feature. Feature Key A programmable button on a Norstar telephone that can be assigned a line, extension, or feature function. Flash See Norstar Flash. Also: a brief on-hook signal used to access certain carrier features on analog CO lines.  H Hunt Group A set of extensions configured to receive calls in sequence (sequential), rotation (rotary), or all at once (broadcast) until one answers.  I ICS Integrated Communications System. The larger, fully modular Norstar KSU for medium businesses. Capacity determined by cartridge configuration. Intercom An internal call between two extensions on the same Norstar system, using the system's internal wiring rather than a CO line.  K KSU Key Service Unit. The central cabinet or controller of the Norstar system. Connects CO lines to station ports and runs the system software.  L – M Line Pool A group of CO lines that can be accessed collectively. Extensions dial a line pool access code to seize any available line in the pool. Meridian Northern Telecom's umbrella brand for business telephone products. The Meridian 1 is the large enterprise PBX; Norstar is the Meridian digital key system product. MWI Message Waiting Indicator. A lamp on the telephone set (or a display icon) that lights when there is a new voicemail message.  N Night Service A system mode (usually after business hours) that reroutes incoming calls to a different destination such as an after-hours voicemail or answering service. Norstar Flash Northern Telecom's embedded voicemail module for Norstar systems. Installs directly in the KSU without a separate server.  P – R Park Placing a call on a shared hold that any extension can retrieve by dialing the park slot number. Used with paging to locate someone. Prime Line The CO line seized automatically when a telephone handset is lifted without pressing a specific line button. Privacy A feature (Feature 80) preventing other sets from joining your active call by pressing the same line button. Ring Again A callback feature (Feature 3) that notifies you when a busy extension becomes free.  S – T Station An individual telephone connected to a KSU station port. Each station is assigned a unique DN. Transfer Redirecting an active call to another extension or external number. Can be announced (supervised) or blind (unsupervised). Trunk An external telephone line or circuit connecting the KSU to the public switched telephone network (PSTN). Synonymous with CO Line in Norstar terminology. Trunk Module An expansion cartridge installed in the CICS or ICS that provides additional CO line (trunk) ports beyond the base configuration.

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