LTE Standard Module Series
EC200U&EG915U_Series_PPP_Application_Note 15 / 28
5
PPP Connection Termination
There are two methods to terminate the PPP dial-up connection:
1. Terminate the PPP connection through the LCP Terminate-Request message, and this method is
recommended.
2. TA can also terminate the PPP connection by changing the DTR level. Set the DTR function by
AT&D2
first, change the DTR level from low to high, and the data connection will be automatically
terminated. After the PPP connection is completely terminated, the USB/UART port will enter the
command mode. Examples are as follows:
Example
//USB/UART port is still in command mode before PPP connection is established.
AT&D2
OK
1. PPP connection termination procedures must be performed in data mode.
2. PPP connection termination procedures can be performed at any time during the PPP setting or
connecting process.
NOTE
