Troubleshooting

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

MTA128ST/NT

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