User`s guide
Glossary 185
Synapse SB67020 Deskset User’s Guide
hub: A network hub or repeater hub is a device for connecting electronic devices, making them act as a single link
hunt group: A telephone company feature that allows calls to a busy phone number to roll over to the next available line or a 
Synapse system ring group feature where unanswered calls are forwarded to the next available extension in a predefined group 
of extensions
icon: A small picture in the display that presents status information
Idle: The mode of a device when it is not involved in call or call setup activity
interference: Electrical signals close by that cause degraded audio performance for cordless devices
internal call: A phone call placed from one of your Synapse system extensions to another extension
IP address (Internet Protocol address): An individual numeric identification assigned to devices on your LAN
ISDN (Integrated Services Digital Network): A set of communication standards for simultaneous digital transmission of voice, 
video, data, and other network services over the traditional circuits of the public switched telephone network.
IT Controller: Part of a computer network infrastructure that connects different parts of the network, so that different LANs and 
subnets can exchange information. Also known as a backbone network or a network backbone.
key beep: When enabled, pressing a key plays a tone
LAN (Local Area Network): A communications network that allows data devices to communicate with each other
LCD (Liquid Crystal Display): The screen that provides instructions and feedback
LED (Light Emitting Diode): A small light on a device that indicates status
link loss: Occurs when the connection between two RF devices fail, such as between the SB67030/031 Deskset and the optional 
Cordless Headset or Cordless Handset
link-local address: A local address used for network address creation when no external source of network addressing information 
is available
live dial: Dialing after the phone is off hook










