ATT BEARER

[arunbm123]

hi

what is meant by ATT bearer ?

[Bjørn Kvaale]

Do you mean the GATT bearer?

[priya123]

check this ........

3.3.3 Transaction
An attribute protocol request and response or indication-confirmation pair is
considered a single transaction. A transaction shall always be performed on
one ATT Bearer, and shall not be split over multiple ATT Bearers.

[Bjørn Kvaale]

Where did you find this information? Could you please add a link?

[priya123]

hi

Bjørn Kvaale

This is  from Bluetooth Core Specification.5.0 , Page No 2181

Check out this screen Shot

[Bjørn Kvaale]

Thanks for the screenshot. If you take a look at the same document, pg 2276 section 5.2 says this about the ATT Bearer: "the ATT Bearer is the Attribute L2CAP fixed channel". It is also referred to as the logical link  in Section 5.1 on pg 2275. The best definition is most likely in Section 2.4 Profile Fundamentals on page 2224. The ATT Bearer is the Attribute Protocol L2CAP channel.