Investigation of SMS traffic transmission in communication network

The article explores the features and methods of sending SMS traffic using the API (Application Programming Interface), discusses the parameters and API functions for sending Short Message Service (SMS) messages, also analyzes of causes of the loss of the traffic and the options for subsequent prevention of this loss. The scheme of the interaction between the Short Message Service Center (SMSC) and ordinary subscribers is considered. The popular protocol Short Message Peer-to-Peer (SMPP) was used as the protocol under study, capable of transmitting any type of messages, and is an open protocol in the telecommunications industry, which is designed specifically to provide a flexible interface for exchanging SMS messages between SMS applications, platforms, routers and short message service centers. The analysis of the captured traffic was carried out using special software - Wireshark, that allows to apply filters to track the protocols that are used for SMS transmission. Various types of losses in telecommunication networks are considered and a correlation is established with the factors which affect the communication channel. The results obtained can be used to develop an algorithm for searching for lost packets that occur when traffic passes through switching nodes. This model is able to improve the quality of service for telecom operators.