Multi-Tech Systems MTA128NT User Manual
Page 35

Troubleshooting
MTA128ST/NT
35
SITUATION 4: The autobauding code does not report the number of stop bits. This may become a problem
if the terminal is expecting a certain number of stop bits. The addition of the
%S3 command and use of
$SBn, @P3=n, @P4=n, and @P6=n will help work around this limitation. See the description for the %Sn
command.
Debugging/Logging/Troubleshooting Commands
The AT commands in this section can be used in attempting to troubleshoot or debug a current problem.
Some commands may be enhanced or limited by the debugging/logging/troubleshooting S-registers. For
complete descriptions of the commands and S-registers, see the additional documents on this CD.
Debugging/Logging/Troubleshooting Command Summary
AT Command
Function
>Dn
Embedded Protocol Analyzer (EPA)
*FSn
Reset TA
*Ln
Fatal Error Information
>LOG
Display Logging Buffer Contents
>Sn
Logging Variables
>TIME
Display Current Timestamp
*V
Various State Information
Debugging/Logging/Troubleshooting S-Registers
The S-registers in this section can be used in attempting to troubleshoot, debug, or even correct a current
problem. Some S-registers modify functionality of various features. Some S-registers modify the
functionality of the debugging/logging/troubleshooting commands described in the additional documents on
the system CD.
Debugging/Logging/Troubleshooting S-Register Summary
S-register Function
S47
Pulse-dial Maximum Break Pulse Period
S48
Pulse-dial Maximum Interdigital Pause
S72
EuroISDN Variant
S78
Maximum Allowed V.110 Network Rate (some models only)
S90
Local PPP Capabilities
S91
Remote PPP Capabilities
S92
Channel ID Information Element Octet 3 Settings
S93
Blacklisting
S94
Minimum Buffer Space After Trigger
S95
Logging Buffer Functionality
S96
Decode (EPA) Buffer Functionality
S98
ISDN_MSG Size
S99
Startup Options
S100
Flow Control High Threshold
S101
Flow Control Low Threshold
S102 Data to Save for Decoding