6AOSUG0001-1A Copyright © 2011 ADTRAN, Inc. 51APPENDIX A. GLOSSARYActive state/Active call: Refers to when the phone is in use and connected to another phone.Busy Lamp Field: BLF indicates the status of another phone.Caller ID: Service provided by some local telephone companies that supplies the calling party’s telephonenumber and name.CSV file: Comma Separated Values file. The CSV file is a plain text file specially formatted to storespreadsheet or database information. CSV files are used as a method for transferring data betweenprograms. For example, to load a phone book created in Microsoft Excel into your IP phone, save theExcel file as a CSV file and upload it to the phone through the Web GUI.DHCP: Dynamic Host Configuration Protocol. DHCP is a protocol that assigns dynamic IP addresses todevices on a network. Each time the IP 706/IP 712 phone connects to the network, its IP address maychange. The DHCP keeps track of the address changes.Distinctive rings: Distinctive Rings are specific ring tones set to specified numbers, allowing the user torecognize who is calling by the ring assigned to their number. Differing from internal/external rings,Distinctive Rings apply only to specified numbers in the Personal Contacts list.Duplex: Refers to the communication ability of two devices in a system. Half-Duplex means conversationbetween two devices can only go one direction at a time; Full-Duplex allows for communication in twodirections simultaneously.Firmware: The software that is embedded in a hardware device.Function keys: The keys on the phone face that have an assigned function that does not change.Handset: The hand-held part of the telephone that contains the audio transmitter and receiver.Headset: A handsfree device worn on the head that contains the audio transmitter and receiver.HFAAI: Handsfree Auto Answer Intercom. The HFAAI feature enables the phone to answer callsautomatically (without ringing) when both parties have HFAAI activated on their phones.Idle screen: The LCD display when the phone is in an idle state.Idle state: Refers to the state when the phone is not in use and is not connected to an active call. In thisstate, the LCD displays the idle screen.IP Address: Internet Protocol Address. IP addresses are used by devices on a computer network touniquely identify themselves and communicate with other devices via Internet protocol.Key system: The Key system is the type of phone system most often used by small businesses that do notrequire the larger number of phone lines supported by a PBX system. Key systems have a line key assignedfor each outside line and separate buttons for internal calling, unlike the grouping of the PBX systems.