The SMPP protocol can be used to connect your computer directly to the Short Message Service Center (SMSC) of the service provider. This way you can send and receive SMS messages over the Internet or over a private IP network.You can install and configure this connection using the graphical user interface of bulksmsserviceproviders - SMS Gateway.
you need to install and configure one or more service provider connections for SMS messaging using bulksmsserviceproviders - SMS Gateway. One of the service provider connections supported by the software is the Short Message Peer-to-Peer (SMPP) connection.
The SMPP Server API allows you to send and receive SMS and delivery receipts (DLR) through bulksmsserviceprovider’s connectors, send and receive long (more than 160 characters) SMS and unicode/binary content.