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With all it's jargon and more three letter acronyms than you can shake a stick at, Bluetooth can be a difficult subject to follow. Help is at hand however in the form of outr handy Bluetooth glossary below! # 2-in-1 Handset - The situation where a subscriber handset is acting as a remote handset to a unit which provides a network connection. 3G - Third generation. Refers to the next generation of digital phone technology (see UMTS). back to top a Acceptor - The Bluetooth device receiving an action from another Bluetooth device. The device sending the action is called the initiator. The acceptor is typically part of an established link. ACK - Acknowledge. ACL - Asynchronous Connectionless Link. An Asynchronous (packet-switched) connection between two devices created on the LMP level. ACO - Authenticated Ciphering Offset. Added to Paired Devices - This is a message used to confirm that a user has successfully paired two Bluetooth devices. AG - Audio Gateway. AM_ADDR - Active Member Address. AP - Access Point. Application Layer - The group of protocols at the end-user level. The application layer in the Bluetooth protocol layers will contain those protocols involved with the user interface. AR_ADDR - Access Request Address. ARQ - Automatic Repeat reQuest. AT Command Handler - A module that handles the AT commands which control a phone or modem (between a DTE and a DCE). Authentication - The process of verifying the identity of the other end of a communications link. In Bluetooth technology this is achieved by the authentication process based on passkeys and pairing. Authentication Device - A device whose identity has already been verified during the lifetime of the current link. Authenticate using a passkey - See passkeys. Authorisation - The process of deciding if a certain device is allowed to access a service on another device. back to top b Baseband - The baseband describes the specifications of the digital signal processing part of the hardware - the Bluetooth link controller, which carries out the baseband protocols and other low-level routines. BD_ADDR - Bluetooth Device Address. BER - Bit Error Rate. Bluetooth - The name "Bluetooth" comes from the name of a Danish king from the 10th century who unified Denmark and Norway, because of the way Bluetooth unifies communications devices. Briefly, Bluetooth is an open specification for wireless communication of both data and voice. Bluetooth Clock - The master timing system defined by the master of the piconet. Bluetooth Device - A device containing the required hardware and software to connect to other Bluetooth devices. Bluetooth Device Class - A parameter that indicates the type of device and which services are supported. The class is distributed to other devices during the discovery procedure. Bluetooth Device Name - See Device Name. Bluetooth Passkey - See Passkey. Bluetooth SIG - The Bluetooth Special Interest Group - www.bluetooth.org Bond / Bonding - Bonding is the creation of a link key between two devices. The relationship is created when the link key is exchanged between two devices. BT - Bluetooth. Bus - A set of data lines to transfer information from one device to another. Business Card - The electronic equivalent of a traditional business card. These are treated as files and can be exchanged between Bluetooth devices. back to top c Channel - A logical connection on the L2CAP level between two devices serving a single application or higher layer protocol. Circuit Switched - The application of a network where a dedicated line is used to transmit information. Only one user may employ the resources of the line at a time. Circuit Switched Bluetooth - The application of a network where a dedicated line is used to transmit Bluetooth data. CL - Connectionless. Class of Device / CoD - see Bluetooth Device Class. CO - Connection-oriented. CODEC - COder/DECoder. A device that converts analogue to digital data and vice versa for transmission over a digital communications system. Connect to service - The establishment of a connection to a service. This can include establishment of a physical link if necessary. Connectable devices - Any device within range that will respond to paging from an initiator device. Connectable Mode - Another name for Discoverable Mode. CP - Call Processing. CP - Capability Provider. A module within the local device that provides a service to other modules, eg. protocol stack modules. CPU - Central Processor Unit. The main processing component in a hardware device. CRC - Cyclic Redundancy Check. CSP - Chip Size Package. CTP - Cordless Telephone Profile. CVSD - Continuous Variable Slope Delta Modulation. back to top d DAC - Device Access Code. DCE - Data Communication Equipment. DCE - Data Circuit-Terminating Equipment. In serial communications this refers to a device between the communication endpoints whose sole task is to facilitate the comms process, such as a modem. DCI - Default Check Initialisation. DD API - Device Driver API. Device Discovery - A mode offered by Bluetooth devices to search for other Bluetooth devices within range. Device Layer - The group of protocols that handles the hardware in a Bluetooth device. The device layer handles components such as the display, keypad, and RF communications. Device Name - Any Bluetooth device has a "device name". This can usually be set by the user in the device's user interface, and is a maximum of 248 bytes long. Device security level - There are two levels of security level in Bluetooth devices - trusted device and untrusted device. Devices in Range - During device deiscovery a Bluetooth device is looking for other "Devices in Range". These are compatible Bluetooth devices within the operation range (usually around 10 metres) of the searching device. Devices not found - This is an error message which may appear if a search for other devices in range does not find anything. DH - Data-High Rate. Data packet type for hight rate data. DIAC - Dedicated inquire access code. Discoverable / Make Discoverable / Discoverable Mode - In order for one Bluetooth device to "find" another, the device to be "found" must be set to discoverable mode. When not in discoverable mode, a Bluetooth device is invisible to other devices, except those with which it is already paired. DLCI - Data Link Connection Identifier. DM - Data - Medium Rate. Data packet type for medium rate data. DSP - Digital Signal Processor. DSR - Data Set Ready. A device sets a signal (RS-232 DSR) when it is ready to accept data. DT - Data Terminal. DTE - Data Terminal Equipment. Refers to a device at the endpoint of a communications path, typically a computer or terminal. DTMF - Dual Tone Multiple Frequency. Dumb Peripheral - A peripheral that does not communicate any data to the handset. The only data that is transferred to the handset is a signal that the connection has been made. DUT - Device Under Test. DV - Data Voice - Data packet type for data and voice. DWDM - Dense Wavelength Division Multiplexing. back to top e Encrypted Link - For added security some Bluetooth devices offer an option to encrypt data passed between them. Depending on the products encryption can be set up on a system-wide, connection or application basis. ESMR - Enhanced Specialised Mobile Radio. ETSI - European Telecommunications Standards Institute. back to top f FCC - Federal Communications Commission. FEC - Forward Error Correction. FH - Frequency Hopping. FHS - Frequency Hopping Synchronisation. FHSS - Frequency Hopping Spread Spectrum. FIFO - First In First Out. FSK - Frequency Shift Keying. A method of modulation. back to top g GAP - Generic Access Profile. How one device discovers and accesses another when they do not share a common application. G-FSK - Gaussian Frequency Shift Keying. GIAC - General Inquire Access Code. Another name for discoverable mode. GM - Group Management. GOEP - Generic Object Exchange Profile. GUID - Globally Unique IDentifier. GW - Gateway. A Bluetooth basestation which bridges Bluetooth devices to an external network. back to top h HA - Host Application. A piece of software that uses Bluetooth. HCI - Host Controller Interface. HDLC - High level Data Link Control. Headset - An earpiece and microphone used to have conversations. A Bluetooth headset can be connected to a Bluetooth mobile phone or other compatible device. HEC - Header Error Check. HID - Human Interface Device. Host - A software and hardware platform on wich the Bluetooth package runs. HPC - Handheld Personal Computer. HS - Headset. HSM - Host-Specific Mechanism. HV - High quality Voice. HW - Hardware. back to top i IAC - Inquiry Access Code. ICE - In-Circuit Emulator. ICS - Iridium Communication Systems. iDen - Integrated Digital Enhanced Network. Idle Mode - A device is in idle mode when it has no established links with other devices. In this mode a device may discover other devices. IEEE - Institute of Electronic and Electrical Engineering. IETF - Internet Engineering Task Force. IF - Intermediate Frequency. Initiator - The Bluetooth device initiating an action to another Bluetooth device. The device receiving the action is called the acceptor. The initiator is typically part of an established link. Inquiry Procedure - The inquiry procedure allows a device to discover other devices within range. Intelligent peripheral - A peripheral which is capable of exchanging data with the handset. Also known as a smart peripheral. Interference - Bluetooth signals are sent by radio waves on an unlicensed frequency. There are some other products which use or create interference on this frequency, and this can cause errors, loss of connectivity or decreased connection speed. Examples of some products known to cause interference are microwave ovens and some models of cordless telephones. Internet Bridge - Method of using a wireless modem for connecting to Internet access. IP - Internet Protocol. IrDA - Infrared Data Association. A method of communication between electronic devices using 800-nm infrared light. IRM - Image Rejection Mixer. IROM - Internal Read-Only Memory. ISM - Industrial, Scientific, Medical (a global, public radio frequency band; 2.4GHz). ITU - International Telecommunication Union. IWF - Interworking Function. back to top j JTAG - Joint Test Action Group (interface for in-circuit debugging and testing). JTAPI - Java Telephony Application Programming Interface. back to top k Key Management - The management of encryption keys. Known Device - A device which is already known about by another device. Either the devices have been paired in the past or some information of the known devicee is stored. back to top l L2CAP - Logical Link Control and Adaption Protocol (part of Bluetooth Software Stack). LAN - Local Area Network. LAP - LAN Access Point. LC - Link Controller. Manages the link to other Bluetooth devices. LCP - Link Controller Protocol. LCSS - Link Controller Service Signalling. LM - Link Manager. Software which sets up links, authentication, etc. LMP - Link Manager Protocol, part of the Bluetooth Software Stack. The LMP is used for peer-to-peer communication. LNA - Low Noise Amplifier. LocDev - Local Device. back to top m MAC - Media Access Control. MAC Address - 3-bit address to identify devices on a network. Master Device - A device which initiates an action or requests a service on a piconet. Master Net - The device in a piconet which synchronises the clocks and hopping sequences of all other devices. MCP - Multi-Chip Package. MM - Mobility Management. MS - Mobile Station. MS - Multiplexing Sublayer. MSC - Modem Status Command. MSC - Message Sequence Chart. MTU - Maximum Transmission Unit. MUX - Multiplexer. A device which combines one or more data streams into one for transmission over one data channel. M_ADDR - Medium Access Control Address. back to top n NAK - Negative Acknowledge. Name Discovery - The mechanism to request and receive a device name. NDIS - Network Driver Interface Specification. New device - See Unknown device. Non-connectable mode - A device is in non-connectable mode if it does not respond to paging. Non-discoverable mode - A device that will not respond to discovery requests. Non-pairable mode - A device that will not accept pairing is said to be in non-pairable mode. back to top o OBEX - OBject EXchange Protocol. OS - Operating System. back to top p Packet Switched Bluetooth - Routing Bluetooth data packets on a network using addresses contained within the data packets. Paired - When two Bluetooth devices are paired, they save connection information about each other so that when they are in range of each other they are automatically connected. This eradicates the need for searching for and connecting to frequently used devices each time. Parked Unit - A device on a piconet that is synchronised but does not have a MAC Address. Passkey - A passkey is a user-defined password needed to connect to a device from any other device. It is strongly advised to use passkeys wherever possible to avoid unauthorised access to your Bluetooth devices. PCMCIA - Personal Computer Memory Card International Association. PDA - Personal Digital Assistant. Physical Channel - A synchronised Bluetooth RF hopping sequence. Physical Link - A baseband-level connection between two devices established under paging. Piconet - A collection of Bluetooth devices connected in an ad-hoc fashion. A piconet may contain between 2 and 8 connected devices. Bluetooth is a peer-to-peer system, however in a piconet, one unit will act as a master and the other(s) as slave(s) for the duration of the piconet connection. PIN - Personal Identification Number. See Passkey. PLL - Phase Locked Loop. PM_ADDR - Parked Member Address. PnP - Plug and Play. PPP - Point to Point Protocol. Profiles - Profiles are complete definitions of how a manufacturer can implement Bluetooth wireless technology into a product for a particular usage case. Profiles are then offered by that device. Examples of Bluetooth Profiles are audio headset, file transfer, printing etc. There are currently around 20 Bluetooth profiles available, offering a wide range of services. PSM - Protocol/Service Multiplexer. back to top q QoS - Quality of Service. back to top r Range - The "range" of a Bluetooth device is the maximum distance a connection can be maintained (usually in meters). The general range for Bluetooth devices is around 10 meters. RemDev - Remote Device. RF - Radio Frequency. RLP - Radio Link Protocol. RS-232 - Serial communications interface as specified by the Electronics Industries Association (EIA). RSSI - Received Signal Strength Indication. RX - Receiver. back to top s SAP - Service Access Points. SAW - Surface Acoustic Wave (filter). Scatternet - A network of multiple independent and non-synchronised piconets. SD - Service Discovery. SDA - Service Discovery Application. SDAP - Service Discovery Application Profile. SDK - Software Development Kit. Security Manager - The module in a Bluetooth device that controls the security aspects of Bluetooth communications. Service Discovery - Querying a Bluetooth device to find out what services (profiles) it supports. SIMOX - Seperation by iMplantation of OXygen (chip process technology). SMS - Short Message Service. SOI - Silicon on Insulator (chip technology). SP - Service Provider. SRES - Signed Response. SrvDscApp - Service Discovery Application. SS - Suplementary Services. SSI - Signal Strength Indication. SU - Subscriber Unit - Another name for a mobile handset. SW - Software. back to top t TAE - Terminal Adapter Equipment. TCI - Test Control Interface. TCP - Transport Control Protocol. TCP/IP - Transport Control Protocol/Internet Protocol. TCS - Telephone Control protocol Specification. TCS-AT - A set of AT commands used to control a mobile phone and modem. TCS Binary - Bluetooth Telephone Control protocol Specification using bit-oriented ptotocol. Also called TCS-BIN. TDD - Time Division Duplex. TL - Terminal. TLO - Terminal Originating a call. TLT - Terminal Terminating a call. TTC - Telecommunications Technology Council. TX - Transmit. back to top u UA - User Asynchronous. UAP - Upper Address Part. UART - Universal Asynchronous Receiver Transmitter. UDP - User Datagram Protocol. UDP/IP - User Datagram Protocol/Internet Protocol. UIAC - Unlimited Inquiry Access Code. UMTS - Universal Mobile Telecommunications System. Also known as 3G. Unknown Device - A device that is not currently paired with the local device, and has not been paired with it before or no information about the device is stored. USB - Universal Serial Bus - www.usb.org back to top v VCO - Voltage Controlled Oscillator. back to top w W-CSP - Wafer-level Chip Size Package. back to top |
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