TROUBLESHOOTING

Valid commands in the modem command file are ignored
You may notice this problem if you check the log and find that OK responses are missing after one or more valid commands. Try these tips to solve the problem:

1. Make sure letters in the AT commands in the modem command file are either all uppercase or all lowercase. Many modems do not recognize mixed-case commands.

2. Make sure that commands in a long setup string do not exceed the character limit for the modem. Use the Setup=AT command at the beginning of each line to split the setup strings into smaller sections.

See also