Freescale Semiconductor 94001480400/D Connection Transfer, Connection Release, Connection Loss

Freescale Semiconductor, Inc.

ARCHIVED BY FREESCALE SEMICONDUCTOR, INC. 2005

Freescale Semiconductor, Inc.

System Operational Modes

The headset supports enteringARCHIVEDSniff ModeBY FREESCALEwhile maintainingSEMICONDUCTOR,an HV2 or HV3 linkINC. This. 2005can 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.

3.5Connection 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). Referring to the Bluetooth specification, this is achieved by the AG, following some sort of user action on the AG4. 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 specification 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.

3-4HeadsetMOTOROLA

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