Assigned Numbers are used in the Logical Link Control for protocol/service multiplexers.
Channel Identifiers
The predefined L2CAP Channel Identifiers can be found within the Bluetooth® Core Specification, in Volume 3, Part A – Logical Link Control and Adaptation Protocol Specification.
Protocol and Service Multiplexers (PSMs)
CID Name Space
The CID name space for the ACL-U, AMP-U, and LE-U logical links that are defined can be found within the Bluetooth Core Specification in Volume 3, Part A – Logical link Control and Adaptation Protocol Specification.
The ACL-U and AMP-U CID Name Space
Value(s) | Reference for Definitions |
---|---|
0x0000-0xFFFF | Bluetooth Core Specification Vol 3, Part A, section 2.1 (all versions v2.1 + EDR and later), Table 2.1 |
The LE-U CID Name Space
Value(s) | Reference for Definitions |
---|---|
0x0000-0x001F | Bluetooth Core Specification Vol 3, Part A, section 2.1 (all versions v2.1 + EDR, and later), Table 2.2 |
0x0020-0x003E | Reserved for future use |
0x003F-0xFFFF | Bluetooth Core Specification Vol 3, Part A, section 2.1 (all versions v2.1 + EDR, and late), Table 2.2 |