Freescale Semiconductor MOTOROLA 94001480400/D User's Manual
Contents
1. HOME PAGE hitp www motorola com semiconductors Copyright Motorola Inc 2003 For More Information On This Product Go to www freescale com ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Freescale Semiconductor Inc ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Contents Chapter 1 Introduction Ll About This Document io a6 s a dokn Reo dete E eon eds ice E oe L2 Brief Description of Functionality iecore ke eee ode ae hx hx aes Chapter 2 User Interface 2 1 inu A rrr 2 2 System States and LED Indications 0 00 c cece eens 2 3 System Events and Audio Indications 2 0 0 0c cece eee Chapter 3 System Operational Modes 3 1 Headset Power On Connection Scan ssassn aseene neona 3 2 Incoming Connection sessanta one xa e EX See rarere 3 3 Outgoing Connection Lua acie ie es Ro roa C AURORA EA dO dal e RR 34 Call Active Ongoing Audio Connection seasan sasarane anea 3 5 Connection Transfer oues RR x ACE E AERA eS eere 3 6 Connection REIGATE 4 oue Gu tae xe pP Ee bad bts ded 3 7 Ae uu DEEP PTT 34 Configuration Mode Bonding 4 2 c444040ea th 3 EAR ees BERS GR ESS MOTOROLA Contents For More Infe amp npBtidun Qy This Product Go to www freescale com Freescale Semiconductor Inc ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Freescale Semiconductor Inc ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Headset For More Infe amp npBtidun Ary This Produc2. Bonding If the link is lost the useRis Now Hed BY dn di M ichtion M Te h eads hen eats up tlbinternal connection variables and returns to the connection scan idle state as if it had just been powered up Thus it will be ready for any reconnect attempt from the AG 3 8 Configuration Mode Bonding From time to time the user may want to reconfigure the headset either to change the audio indications volume setting or to store a new AG address in the headset to allow the headset to connect to this AG Since this will happen rather infrequently the user must put the headset in a special mode where such actions are allowed This is done by pressing one of the headset buttons while powering up the headset depending on which AG address should be stored If the address to be used when creating an outgoing connection by pressing the BT button is to be stored the BT button must be pressed while powering on the headset If the other AG address is to be stored either the VOL or VOL button must be pressed The headset LED will show that the headset is in Config mode To adjust the volume of audible indications such as low battery the user uses the VOL and VOL buttons only while in Config mode For each press an example indication is given using the new volume setting Actually it is the indication volume offset from the speaker level that is adjusted since the indications volume is always scaled proportionally to the pr
3. For More Information On This Product Go to www freescale com ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Freescale Semiconduc te Ah Me and Audio Indications ARCHIVfabl 2 2 R EED Indications Cortinu d OR INC 2005 System States Green ON Time Red ON Time Outgoing connection 500 ms on 500 ms off 500 ms on Outgoing connection batt very low 500 ms on 500 ms off 500 ms on Same as green LED Connected 500 ms on Connected batt very low 500 ms on Same as green LED Call active 1000 ms on Call active Tx muted 450ms on 100 ms off 450 ms on Call active batt very low 1000 ms on Same as green LED Call active Tx muted amp batt very low 450ms on 100 ms off 450 ms on 1000 ms on Events Green ON Time Red ON Time Reset to default 5 times 50 ms on 100 ms off Off Pairing success 5 times 100 ms on 200 ms off Off Table 2 3 Audio Indications Indication Name Indicated Event Frequency Duration Sound Mute repeated Tx audio mic 2 kHz 200 ms dii dip muted off 50 ms 2 kHz 50 ms rep period 3s Weak link repeated Link conditions poor 400 Hz 800 ms dooop rep period 5s Battery low repeated Battery completely 650 Hz 100 ms dup doop drained System will off 500 ms be shut down in 3 400 Hz 500 ms minutes without rep period 5s further warning Power on System power on 400 Hz 150 ms do du diip off 50
4. ms 650 Hz 150 ms off 50 ms 1 kHz 400 ms Config mode entered Config mode has 400 Hz 150 ms do du duup been entered off 50 ms 650 Hz 150 ms off 50 ms 650 Hz 400 ms Indication level test Test indication for 1 kHz 100 ms dip adjusting indication level MOTOROLA User Interface For More Information On This Product Go to www freescale com User Interface Freescale Semiconductor Inc CHI Vable2 3F Pidio IAdications Coritini led OR INC 2005 Indication Name Indicated Event Frequency Duration Sound Pairing complete Successful pairing 1 3 kHz 150 ms di diip off 50 ms 2 kHz 350 ms Reset to default All settings reset to 500 Hz 500 ms doop their factory settings Ring Incoming call 800 Hz 250 ms duu duup off 50 ms 650 Hz 350 ms Long button Press Long button press 500 Hz 150 ms dop was registered Short button Press Short button press 1 kHz 100 ms dip LO i e was registered e J Volume min max No more volume 2 kHz 500 ms diip gt steps available nd Link dropped Link was dropped 1 kHz 100 ms di di di di O The link conditions off 50 ms O must be improved 1 kHz 100 ms and possibly some off 50 ms gt action must be 1 kHz 100 ms performed to off 50 ms re establish the link 1 kHz 100 ms Power off System power down 1 kHz 150 ms di du dooop sequence initiated off 50 ms 650 Hz 150 ms off 50 ms 400 Hz 400 ms LL L 2 4 Headset MO
5. ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Freescale Semiconductor Inc ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Bluetooth Headset User s Guide 94001480400 D Rev 1 5 2002 09 02 MOTOROLA sf digital dna For More Information On This Product Go to www freescale com ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Freescale Semiconductor Inc ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Motorola reserves the right to make changes without further notice to any products herein Motorola makes no warranty representation or guarantee regarding the suitability of its products for any particular purpose nor does Motorola assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability including without limitation consequential or incidental damages Typical parameters which may be provided in Motorola data sheets and or specifications can and do vary in different applications and actual performance may vary over time All operating parameters including Typicals must be validated for each customer application by customer s technical experts Motorola does not convey any license under its patent rights nor the rights of others Motorola products are not designed intended or authorized for use as components in systems intended for surgical implant into the body or other applications intended to support life or for any other application in which the f
6. TOROLA For More Information On This Product Go to www freescale com ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Freescale Semiconductor Inc ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Chapter 3 System Operational Modes This section describes typical operations that the user must carry out to operate the Development Kit headset It is divided into a number of use situations each focusing on an aspect of system use Refer to Chapter 2 User Interface for an overview of the system MMI including button action matrix and illustrations of audible and visual system indications On the silk print of the Development PCB the buttons VOL VOL BT are designated and FUNCI respectively 3 4 Headset Power On Connection Scan When turned on the headset automatically enters discoverable and connectable mode that is it will repeatedly scan for an incoming inquiry or connection request from other Bluetooth devices such as an audio gateway AG If the AG desires it may repeatedly try to connect to the headset thus connecting right away when the headset is turned on or it may repeatedly inquire for Bluetooth units in the vicinity thus immediately discovering the headset when it is turned on Having a connection to the headset up at all times will speed up the audio link connection process substantially but will also reduce the battery lifetime of the headset since the units must exchange data from time to time to main
7. The link quality measure is also used to determine the voice packet type used Normally HV3 packets are used but HV1 packets will be used in case of weak links The system state can always be observed from the two system LEDs In addition major system events are visually and or audibly indicated Refer to Chapter 3 System Operational Modes for a thorough description of system operation MOTOROLA Introduction 1 1 For More Information On This Product Go to www freescale com Freescale Semiconductor Inc ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Introduction Freescale Semiconductor Inc ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Headset For More Information On This Product Go to www freescale com MOTOROLA Freescale Semiconductor Inc ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Chapter 2 User Interface 2 1 Buttons The headset is equipped with a user interface including three buttons referred to as VOL VOL and BT Bluetooth On the silk print of the Development Kit PCB these buttons are designated and FUNCI respectively FUNC2 is never used The BT button is mainly used for connection management including connection transfer as well as muting the headset microphone When an audio connection is present the VOL and VOL buttons are used for adjusting the headset speaker volume In Config mode these buttons adjust the indication volume When no connectio
8. ailure of the Motorola product could create a situation where personal injury or death may occur Should Buyer purchase or use Motorola products for any such unintended or unauthorized application Buyer shall indemnify and hold Motorola and its officers employees subsidiaries affiliates and distributors harmless against all claims costs damages and expenses and reasonable attorney fees arising out of directly or indirectly any claim of personal injury or death associated with such unintended or unauthorized use even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part The Bluetooth trademarks are owned by their proprietor and used by Motorola Inc under license All other product or service names are the property of their respective owners Motorola Inc 2003 Motorola and amp are registered trademarks of Motorola Inc Motorola Inc is an Equal Opportunity Affirmative Action Employer How to reach us USA EUROPE Locations Not Listed Motorola Literature Distribution P O Box 5405 Denver Colorado 80217 1 303 675 2140 or 1 800 441 2447 JAPAN Motorola Japan Ltd SPS Technical Information Center 3 20 1 Minami Azabu Minato ku Tokyo 106 8573 Japan 81 3 3440 3569 ASIA PACIFIC Motorola Semiconductors H K Ltd Silicon Harbour Centre 2 Dai King Street Tai Po Industrial Estate Tai Po N T Hong Kong 852 26668334 Technical Information Center 1 800 521 6274
9. ality is good that is few packets are lost on the link it is desirable to use the most compact audio transmission mode to avoid using the entire link bandwidth This in turn allows power saving by powering down the radio when not receiving or transmitting However when the link quality deteriorates a more robust transmission mode is desirable To ensure this the headset will attempt to switch packet type depending on the link quality HV3 packets are used by default but the headset will switch to HV1 packets in case of very poor link quality MOTOROLA System Operational Modes 3 3 For More Information On This Product Go to www freescale com ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Syam Operailonal Mo def Feescale Semiconductor Inc The headset supports eftetinlg IStiifP Mode WhikShainth ig a CEU AVG Hink This d be achieved in one of two ways 1 The AG accepts the Sniff request send by the headset when the data link was established without pulling the headset out of Sniff Mode when adding the SCO link 2 The AG requests to put the headset in Sniff Mode when the SCO link has been established 3 5 Connection Transfer If during an ongoing connection the user wishes to stop using the headset perhaps because the battery is running low you can do so without ending the call by transferring the audio end point from the headset to the AG or the equipment to which the AG is connected Refe
10. es are only used when the headset establishes the connection see Chapter 3 3 Outgoing Connection below If the AG requires link level security the connection can only be accepted if the headset already holds a link key which will be the case if the AG address has previously been stored in the headset and the AG at this time requested the use of authentication In this situation the headset and AG are said to be bonded to each other and the process of establishing a bond is referred to as pairing in Bluetooth terms Thus in this situation the process of storing the AG address in the headset is the equivalent of pairing the headset and AG The headset can be paired to up to two AGs at a time Additional devices can still connect to the headset but without the use of authentication Establishing the data connection may take a couple of seconds since the AG has to scan for the headset as the two units may not necessarily be in sync However the establishment of the audio connection will be practically instantaneous The volume setting stored when the headset was last connected is used initially This setting was reported to the AG when the data link was established When connected the headset abstains from further page and inquiry scans that is enters non discoverable and non connectable mode since it is not able to connect to more than one Bluetooth device at a time This also saves power The headset will then be invisible to ot
11. escale com ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Sosm Oberational Mo def Feescale Semiconductor Inc 3 2 Incoming Core tidhEESCALE SEMICONDUCTOR INC 2005 The AG will usually establish a connection to the headset no later than when the AG or the equipment to which it is connected initiates an outgoing or detects an incoming call where call might be a connection over the POTS a Voice over IP connection or a mobile phone call Regardless of whether the AG initiates the call or detects an incoming call the Bluetooth connection to the headset will be initiated by the AG and is thus referred to as an incoming connection in conformity with the BT specification that is the situation 1s seen from the headset point of view It is left to the AG to decide if the user should accept the connection on the headset or if the connection is just added without user interaction If the user is to be prompted for acceptance it can either be done by sending a specified RING command to the headset which will then issue a ring tone in the headset or by sending an in band ring tone to the headset To repeat the alert the AG will have to re issue the command ring tone The user can accept the prompt by pressing a button referred to as the BT button in the following The headset will allow incoming connections from any Bluetooth device even if the BD addresses of one or more specific devices are stored in the headset Stored address
12. esent speaker volume When in Config mode the headset is both discoverable and connectable just as when in Idle mode If an incoming connection is established the headset replaces the selected AG address if one has previously been stored with the address of the AG establishing the incoming connection If the new AG address was stored in the other AG slot already this information is expired to avoid having identical AG addresses stored The Config mode is then automatically exited indicated by the LED and audio Thus the user will be able to tell when the address has been successfully stored If the AG initiates authentication while creating the connection Security Mode 3 link level security in order to bond the two units together the headset acts as required by the Bluetooth specification during the authentication In order to complete this procedure the AG must know the PIN code of the headset This PIN is programmed at production time and stored in non volatile memory and is stated in the documentation typically 0000 After completing this process both units will have derived matching Common Link Keys and the headset will store this key for use when connecting to and accepting incoming connections from the AG in question The headset user will not be able to tell from the headset whether authentication took place since this information is irrelevant to him The headset will still accept connections from any AG or other Blueto
13. fight Bohavidr MPRA situada P sbi bU actions ittefude Aing a pre programmed number requesting user input via a pop up window or prompting the user for spoken input for speech recognition processing However the AG will be expected to add a voice connection over the established data connection at some point in accordance with the Bluetooth specification The headset supports an immediate disconnect from the AG followed by reconnecting the units using an incoming connection from the AG should this facility be desired in order to ensure that the AG is always master of the link during normal system use This will give the AG total control of when to set the headset in low power Sniff Mode After having reversed the connection the headset operates as if the connection had been incoming in the first place see Chapter 3 4 Call Active Ongoing Audio Connection A more elegant scheme for obtaining the same result is to perform a regular master slave switch which is also supported by the headset The headset will never request a master slave switch on its own As if an incoming connection was established the headset will request entering Sniff Mode in order to save power 3 4 Call Active Ongoing Audio Connection An active call ongoing audio connection is indicated by the headset LED To adjust the speaker volume use the VOL and VOL buttons A single press on VOL increases the volume one setting holding down the button increases the volu
14. her AGs and will operate as described in Chapter 3 4 Call Active Ongoing Audio Connection When an incoming connection has been established the headset will request entering Sniff Mode in order to save power The AG is free to reject this request but the headset will not repeat the request 3 3 Outgoing Connection To actively start a call phone call Voice over IP connection etc press any of the three headset buttons if at least one AG BD address is stored in the headset If only one AG address is stored a connection is established to this device regardless of which button was pressed If two AG addresses are stored pressing the BT button establishes a connection to one of them while pressing either VOL or VOL establishes a connection to the other The Outgoing Connection state will be indicated by the headset LED If a connection attempt is successful the headset connects the required Bluetooth protocols over the baseband connection and the Bluetooth key press command specified in the BT specification is sent to the AG 2 Plain Old Telephone System that is an analogue phone line etc 3 Bluetooth Device address a universally unique ID number identifying each Bluetooth unit 3 2 Headset MOTOROLA For More Information On This Product Go to www freescale com ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Freescale Semiconductor Inc ing Audio Connection It is up to the AG to de id the
15. me repetitively The AG may modify the headset volume setting using the VGS command specified in the Bluetooth specification As an example a mobile phone can use this feature to reflect the setting of the phone speaker volume by adjusting the headset speaker volume accordingly Conversely the AG is notified of any changes in the speaker level settings due to input from the headset MMI to allow the AG to keep track of the present settings To mute the headset microphone for example to carrying out a conversation with a colleague without disturbing the caller press the BT button The activation of muting will be acknowledged through an audible alert which will be repeated at intervals The user will still be able to hear the caller Muting is not indicated to the AG The link quality is monitored at intervals whenever an audio connection between headset and AG exists Should the link quality decrease below a specific threshold the user is warned through an audio indication This action is taken both to remind the user of the reason for the degrading audio quality experienced and to indicate that this is a known system situation as opposed to an unknown failure The link quality may be increased by the user moving closer to the AG or removing any obstacles between him and the AG When the link quality has been increased to a level somewhat superior to the threshold mentioned above hysteresis the audio indication is stopped When the link qu
16. n exists the BT button is used for initiating an outgoing connection to one of the paired AGs Either of the VOL and VOL buttons initiates a connection to the other paired AG Pressing one of the buttons when powering up the headset enters Config mode In this mode the headset will require authentication When successfully paired the BD address and link key will be stored in one of two available AG slots The AG slot to update 1s selected by the button pressed at power up Pressing the BT button selects slot 1 whereas pressing one of the VOL and VOL buttons selects slot 2 A successful pairing automatically exits Config mode or it may be done manually by pressing the BT button Table 2 1 provides an overview of the way the button actions depend on the system mode Table 2 1 Button Overview ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 System Mode BT button VOL button Idle not paired No function Idle paired Attempt outgoing connection to AG 1 if paired Attempt outgoing connection to AG 2 to this Otherwise attempt 2 if paired to this Otherwise attempt 1 Connecting Outgoing Abandon connection attempt Linked Send AT CKPD 200 to AG to request link No function disconnection Online Brief press Toggle mic muting In decrease volume by 3 dB Held down Send AT CKPD 200 to AG to repetitive total of 16 settings request link disconnection Config Brief press Exit Pairable mode entering Idle In decrea
17. n is that when the audio link and upper protocols are released there should be no further communication between the headset and AG that is they should be completely disconnected However some AGs may want to retain a data connection in order to allow communication between the headset and AG and speed up the audio re connection If this is the case some action must be performed on the AG to close the remaining connection down if you want to connect the headset to a different AG The connection will also be automatically dropped if the headset powers off 3 7 Connection Loss A special case of connection release occurs when the link is not intentionally released but is dropped due to the headset being moved too far away from the AG or because a considerable obstacle is introduced between the headset and AG Most often the user has been warned of the degrading link quality before the link is lost but if the headset is moved away too quickly from the AG or if a major obstacle is suddenly introduced the link quality degradation may be too sudden for the headset to give a warning 4 According to the Bluetooth specification the audio end point is transferred towards the device that initiates the transfer that is the device on which the user action takes place 3 4 Headset MOTOROLA For More Information On This Product Go to www freescale com ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Freescale Semiconductor AME s ration Mode
18. oth units even if bonded to one or two specific units The bonding only satisfies the AG s desire to certify that the headset to which it connects is beyond any reasonable doubt the headset to which it was originally bonded and to allow the headset to establish an outgoing connection If the user wants to exit the Config Mode without updating the AG information he can press the BT button briefly The headset then returns to Idle mode In this case any previously stored AG address information is left unchanged while any audio indication volume change is maintained Also the headset automatically exits Config mode after three minutes Finally the user may press and hold the BT button to delete all AG information and reset the speaker and indication volume settings to factory defaults This procedure will be indicated by an audio indication and LED flash sequence The headset remains in Config mode ready for pairing a new AG 5 Bonding two Bluetooth units together or pairing them is a way of ensuring that not even an imposter unit trying to pass itself off as the AG to which the headset is bonded can connect to the headset since it will not know the Link Key previously agreed upon by both the headset and the AG which it tries to replace MOTOROLA System Operational Modes 3 5 For More Information On This Product Go to www freescale com ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 avem Gesrallonal MO 44 Freescale Semicond
19. rring to the Bluetooth specification this is achieved by the AG following some sort of user action on the AG From the headset point of view this action is identical to releasing that is discontinuing the connection and is thus similar to the situation described as Connection Release The opposite situation occurs if a user wishes to start using the headset for an already ongoing conversation This is achieved by pressing the BT button and is from the headset point of view identical to establishing an outgoing connection Outgoing Connection Thus it is completely up to the AG to distinguish between a connection transfer towards the headset and an outgoing connection establishment 3 6 Connection Release When a call is completed indicate to the AG that the call may be ended In this situation the audio link between AG and headset will have to be released in order to save particularly headset power According to the Bluetooth specification the data link must also be released and the AG is always responsible for releasing both the audio and data link The headset merely requests this action The user canmanually end the connection call by pressing the BT button which will result in a request being sent to the AG to end the call The AG may also end the call on its own either due to some user action on the AG or because of other detected events such as the remote end hanging up The intention of the Bluetooth specificatio
20. se indication volume by 6 mode while storing indications volume setting dB total of five settings Held down Reset all settings to factory default 1 Connection transfer is used to request the audio output endpoint to be moved from the phone handset to the headset In terms of Bluetooth connectivity this involves requesting a Bluetooth link ACL amp SCO between phone and headset MOTOROLA User Interface 2 1 For More Information On This Product Go to www freescale com ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Freescale Semiconductor Inc User Interface 2 2 System States arid LED Ir dicatior s DUCTOR INC 2005 The following information relates to the figure below showing LED Flash Patterns and Coherence The system state 1s indicated by either a green or a red LED The red LED is used for indicating the battery state exclusively whereas the green LED indicates all other system state information On theleft side in Figure 2 1 all possible state transitions are shown with the associated LED flash patterns Each rectangle represents a time slot of two seconds which is infinitely repeated Green red indicates LED on while white indicates LED off The green LED is shown above the red LED pattern The exact ON times are listed in Table 2 2 To the right LED flash patterns associated with events are shown These are only generated once 2 3 System Events and Audio Indications Several significant
21. system events and a few system states are indicated by audible indications In the case of events the audio indication is only played once as for the LED indications whereas system states are identified by repeated audio indications In Table 2 3 all audio indications are listed and defined In addition to the actual frequencies and duration an intuitive description of their appearance is included This should give a good idea of how each indication sounds since just listing the frequencies may be a little too abstract for practical purposes Figure 2 1 LED Flash Patterns and Coherence SYSTEM STATES EVENTS one shot Off Config Mode Config Very Low Bat E 4 Conn Scan Idle Scan Very Low Bat Feset to Default E p E tt 3j Outgoing Conn Outgoing Very Low Bat Fairing Success mz wmm 214 EEEIEE Connected Connected Very Low Bat EH DJ A4 Utra Low Bat Call Active Call Active Very Low Bat mE 4 gt any state Call Active Mute Call Active VLB amp Mute E y Table 2 2 LED Indications System States Green ON Time Red ON Time Off Off Off Ultra low batt Off 200 ms on 800 ms off 200 ms on Config mode Solid Off Config mode batt very low Solid 200 ms on Connection scan Idle 200 ms on Connection scan Idle batt very low 200 ms on Same as green LED 2 2 Headset MOTOROLA
22. t Go to www freescale com MOTOROLA ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Freescale Semiconductor Inc ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 Chapter 1 Introduction 1 1 About This Document This document is the user s guide accompanying the headset included with the Development Kit for the Bluetooth Platform Solution from Motorola This introduction includes a brief description of the headset functionality The following sections describe the user interface and system operational modes 1 2 Brief Description of Functionality The Development Kit headset is designed for connection to any Bluetooth device capable of assuming the role of a Bluetooth Audio Gateway AG and thus supporting a very basic set of features An AG should be capable of establishing a data link to the headset up to and including the RFCOMM layer as well as establishing a voice link However to facilitate easy testing the headset will not require the RRCOMM link to be established before a SCO connection can be made The headset supports the full Headset profile and can be paired with up to two AGs at a time Any AG may connect to the headset incoming connection but the headset can only connect outgoing connection to the AGs to which it is paired When connected at the RFCOMM level the headset repeatedly monitors the battery status and the link quality If either drops below programmed thresholds audible user warnings are activated
23. tain synchronicity A headset LED will indicate if a permanent data connection exists to the AG If the AG creates a permanent connection it may employ one of the Bluetooth low power modes supported by the headset that is Hold or Sniff Mode see the Bluetooth specification for definitions The battery voltage level is monitored repeatedly whenever the headset is on When there are approximately twenty minutes of battery time left a large interval recurring audio indication is started From this point the user will have a varying amount of time left depending on the present use pattern When the battery voltage has drained to the point where the headset is assessed to be able to run only slightly more than ten minutes the interval between the recurring audio indications is shortened Exactly five minutes after this moment the headset will be automatically shut down in order to ensure that the battery is never completely depleted NOTE The proper thresholds depend on the selected battery and will have to be adjusted by the user for optimal behavior This feature is not yet available The user may power off the headset at any time The current speech and indications volume settings will be stored before power off 1 The headset only scans for so called General inquiries not Limited inquiries in order to optimise the response time MOTOROLA System Operational Modes 3 1 For More Information On This Product Go to www fre
24. uctor Inc ARCHIVED BY FREESCALE SEMICONDUCTOR INC 2005 3 6 Headset For More Information On This Product Go to www freescale com MOTOROLA
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