Headset Profile (HSP)

Headset Profile (HSP)

The HSP describes how a Bluetooth enabled headset should communicate with a computer or other Bluetooth enabled device such as a mobile phone.

Usage Scenarios

The typical usage scenario is, of course, using a wireless headset to connect with your mobile phone.

Example Products

Here are a few examples of the types of devices that you might find using the HSP:

• Headset
• Mobile Phone
• PDA
• PC
• Laptop

Getting Technical

The HSP defines two roles, that of an Audio Gateway (AG) and a Headset (HS):

• Audio Gateway (AG) – This is the device that is the gateway of the audio, both for input and output, typically a mobile phone or PC.
• Headset (HS) – This is the device acting as the Audio Gateway's remote audio input and output mechanism.

The Baseband, LMP and L2CAP are the OSI layer 1 and 2 Bluetooth protocols. RFCOMM is theBluetooth adaptation of GSM TS 07.10. SDP is the Bluetooth Service Discovery Protocol. Headset Control is the entity responsible for headset-specific control signaling; this signaling is AT command based. Note: although not shown in the model to the left, it is assumed by this profile that Headset Control has access to some lower layer procedures (for example, SCO link establishment). The audio port emulation layer shown in the figure to the left is the entity emulating the audio port on the cellular phone or PC, and the audio driver is the driver software in the headset. For the shaded protocols/entities in the figure to the left, the Serial Port Profile is used as base standard. For these protocols, all requirements stated in the Serial Port Profile apply except in those cases where this profile explicitly states deviations. Need more? View the Headset Profile Specification.