Decoding protocols, 1 introduction, 2 lmp and l2cap messages – Teledyne LeCroy Merlin - Users Manual User Manual

Page 129: Chapter 9 decoding protocols, Introduction lmp and l2cap messages

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121

BTTracer Protocol Analyzer User’s Manual

CATC

SW Version 2.0

9. Decoding Protocols

9.1 Introduction

Merlin can decode HCI, LMP and L2CAP messages, and RFCOMM, SDP,
TCS, HDLC, PPP, OBEX, HCRP, BNEP, HID, IP, TCP, and UDP
protocols. The default is packet level decoding, which means that baseband
packets will be displayed when you first view a trace. If these packets are
carrying LMP, L2CAP or other protocols, the protocols will display as
undecoded fields such as the L2CAP packet below.

By issuing a decode command, Merlin can decode these LMP and other
fields and display the data in summary statements called LMP/L2CAP
Messages
, Protocol Messages, and Protocol Transactions.

9.2 LMP and L2CAP Messages

LMP and L2CAP Messages are lines in a trace that summarize LMP and
L2CAP actions such as an LMP connection request. LMP and L2CAP
Messages summarize the type of action, the number of packets involved in

Undecoded L2CAP fields

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