is fixed channels is a connection oriented channel..?

Question

The fixed channel used for ATT information in heart rate profile is a connection oriented channel or connection less channel...?

Petter Myhre · Accepted Answer

Vol 3, Part A, Section 3 in the Bluetooth Core Specification: 
 
 Channels may be connection-oriented or
connectionless. Fixed channels other
than the L2CAP connectionless channel
(CID 0x0002) and the two L2CAP
signaling channels (CIDs 0x0001 and
0x0005) are considered
connection-oriented. 
 
 Vol 3, Part G, Section 5.2.2 in the Bluetooth Core Specification contains the LE Channel Requirements. L2CAP fixed CID 0x0004 shall be used for the Attribute Protocol.