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+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"Eclipse Public License v1.0" which accompanies this distribution, 
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+    Nokia Corporation - initial contribution.
+Contributors: 
+-->
+<!DOCTYPE concept
+  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept id="GUID-F2A793F1-A5B5-526B-B147-771D440B13A2" xml:lang="en"><title>Bluetooth
+Extended Inquiry Response</title><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p>This is a guide to the Symbian platform Bluetooth implementation of Extended
+Inquiry Response (EIR). </p>
+<section id="GUID-F3729B8D-A900-41E2-868E-E04EFD21E76E"><title>Purpose</title> <p>EIR provides information about discoverable
+devices during a Bluetooth Inquiry. </p> <p><b>Intended
+audience:</b> </p> <p>This document is intended to be used by Symbian platform
+licensees and third party application developers. </p> </section>
+<section id="GUID-3F8DF3A7-47F8-47C2-9F47-570D22E4C999"><title>Introduction</title> <p>A Bluetooth communication connection
+is created by two or more devices within a piconet. A device that wishes to
+create a connection must find which other devices/services are available.
+The Inquiry is a request sent by a Bluetooth-enabled device (the "Inquiring
+Device") over a separate physical channel, not within an existing piconet.
+The Inquiry requests all listening ("discoverable") Bluetooth devices to identify
+themselves. In the standard Inquiry Response each device responds with their
+own MAC identifier. The Inquiring Device then has to issue a request to each
+device to determine the local name and any services that each device can support.
+Supported services may include stereo headset or FTP. </p> <p>The Extended
+Inquiry Response (EIR) replaces the standard Inquiry Response and contains
+additional information. </p> <p>Legacy devices are supported so the set of
+responses from all devices may include both EIR and standard Inquiry Responses. </p> </section>
+<section id="GUID-04C48C8B-491E-456C-A2E4-C2AB99A491B9"><title>EIR response values</title> <p>The Extended Inquiry Response
+includes the following: </p> <ul>
+<li id="GUID-01F8A0CA-CA3B-5032-B934-0AA84E41FAF3"><p>device local name </p> </li>
+<li id="GUID-1D61827C-8B5B-55FD-BCDD-B416292FDED6"><p>service class UUIDs
+of each service the device supports </p> </li>
+<li id="GUID-71BE4DDD-4406-5633-AAAA-8A23061242F5"><p>the transmission power </p> </li>
+<li id="GUID-E5CA163A-26F3-5031-8F2B-C0FB543C51FB"><p>manufacturer specific
+values </p> </li>
+</ul> <p><b>Device
+local name</b> </p> <p>On a device such as a phone handset the device local
+name may be set by the user. For example, "Tom's Nokia E71". Otherwise the
+local name defined by the manufacturer, for example "MyTech BT Headset". The
+EIR data packet is a fixed size so the number of characters available for
+the device local name may be insufficient for the entire device local name.
+The data sent is as many characters as fit starting with the first character.
+The number of characters available depends on how many service IDs are sent
+and so this length varies from device to device. A flag is available to indicate
+whether the device local name sent is the complete name or a truncated version. </p> <p><b>Service class UUIDs of each service the device supports</b> </p> <p>A
+Service Class UUID is a value which identifies a particular type of service/functionality
+provided by the device. For example, there would be a Service Class UUID to
+identify a printer, and another Service Class UUID to identify a stereo headset. </p> <p><b>Transmission Power</b> </p> <p>A one byte value containing a transmission
+power level between -127dBm and +127dBm. The Transmission Power (Tx Power)
+value is optional. May be used in conjunction with the Received Signal Strength
+Indicator (RSSI) to calculate pathloss and give an estimate of which of two
+or more responding devices is physically closer to the Inquiring Device. </p> <p><b>Manufacturer specific values</b> </p> <p>This is a set of 8-bit bytes
+and all interpretation and structure is entirely down to the specific manufacturer. </p> </section>
+<section id="GUID-8EEE55FA-89F0-4186-A2CF-F9B9C47AF4A6"><title>EIR tutorials</title> <ul>
+<li id="GUID-23BDCDE6-F8F1-5FAD-BF2B-F87917DB0558"><p> <xref href="GUID-783D0B50-0E8A-5199-A07E-749D4A71E671.dita">Processing
+an Extended Inquiry Response</xref>  </p> </li>
+</ul> </section>
+</conbody></concept>
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