User's Manual
Table Of Contents
- Table of Contents
- 1. Overview
- 2. Quick Installation
- 3. Detailed Installation
- 4. Updates
- 5. Software Overview
- 6. Recording Wizard
- 7. Recording Options
- 8. Display Options
- 9. Reading a CATC Trace
- 10. Decoding Higher Protocols
- 10.1 Introduction
- 10.2 LMP and L2CAP Messages
- 10.3 Decoding and Viewing Higher Protocol Data
- 10.4 Tooltips
- 10.5 Viewing Packets in LMP and L2CAP Messages
- 10.6 Types of LMP and L2CAP Messages
- 10.7 Viewing L2CAP Channel Connections
- 10.8 Viewing Protocol Messages and Transactions
- 10.9 Changing Protocol Assignments
- 11. Other Features
- How to Contact CATC
- Warranty and License
- Index
109
BTTracer Protocol Analyzer User’s ManualCATC Version 1.0
10. Decoding Higher Protocols
10.1 Introduction
BTTracer can decode LMP and L2CAP messages, and RFCOMM, SDP,
TCS, HDLC, PPP, and OBEX 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, BTTracer can decode these LMP and higher
fields and display the data in summary statements called LMP/L2CAP
Messages, Protocols Messages, and Protocol Transactions.
10.2 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