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

Page 121: Chapter 8 decoding protocols, Introduction lmp and l2cap messages

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113

Merlin Mobile User’s Manual

CATC

SW Version 2.0

9. Decoding Protocols

9.1 Introduction

Merlin Mobile can decode HCI, LMP and L2CAP protocol 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 higher protocols, the protocols will
display as undecoded fields such as the L2CAP packet below.

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