User's Manual

NTC 3000 Series – M2M Serial Modem
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AT+TCP_TIMEOUT
Description: This command sets the TCP timeout value in seconds. If the TCP/IP connection is not working, the application will wait for this period of time to re-establish
the connection. The minimum timeout period is 10 seconds while the maximum is 65535 seconds.
Usage 1: To configure the TCP timeout value
AT+TCP_TIMEOUT=xxxxx
Where ‘x’ is an integer in seconds between 10 and 65535.
Usage 2: To read the currently configured TCP timeout value
AT+TCP_TIMEOUT?
Help: AT+TCP_TIMEOUT=?
Example: To set the TCP timeout period to 10 seconds
AT+TCP_TIMEOUT=10
AT+TCP_RETRY
Description: If the NTC-3000 is operating in TCP or UDP client mode and the connection with the server is down, the application will try for the AT+TCP_RETRY number
of times to re-establish the connection with the server, then it will wait for the specified TCP_TIMEOUT period and try again. The minimum value is 0 which
will cause the NTC-3000 to retry the connection until a connection is made while the maximum value is 10.
Usage 1: To set the TCP retry count
AT+TCP_RETRY=xx
where ‘x’ is an integer between 0 and 10.
Usage 2: To retrieve the currently configured TCP retry count
AT+TCP_RETRY?
Help: AT+TCP_RETRY=?
Options: 0 Infinite (always try to connect when connection fails)
1 – 10 times to attempt reconnection
AT+LOCAL_IP
Description: Retrieves the NTC-3000’s allocated WAN IP address.
Usage: AT+LOCAL_IP?
AT+DNS
Description: Retrieves the NTC-3000’s allocated DNS address.
Usage: AT+DNS?