LMP (Link Manager Protocol)

The Link Manager carries out link setup, authentication, link configuration and other protocols. It discovers other remote LM’s and communicates with them via the Link Manager Protocol (LMP). To perform its service provider role, the LM uses the services of the underlying Link Controller (LC).

The Link Manager Protocol essentially consists of a number of PDU (protocol Data Units), which are sent from one device to another, determined by the AM_ADDR in the packet header. LM PDUs are always sent as single-slot packets and the payload header is therefore one byte.

DM1 packets are used to transport LM PDUs except if an SCO link is present using HV1 packets and length of content is less than 9 bytes. In this case DV packets are used.

The following is a brief list of the types of PDU's available and their function/operation. These PDU are either Mandatory : M (must be supported), or Optional : O ( optionally supported)