Architecture of SMS Gateway

The function of SMS gateway is to provide a safe and fast channel for data exchange between SP and SMS center, so that mobile phone users can communicate with SP in two directions through SMS, receive information services provided by SP, and complete corresponding charging and collection functions.

The short message gateway includes communication software (using CMPP protocol) that is responsible for the connection with SP. Protocol software connected with SMSC within the scope of responsibility (using SMPP protocol). Communication software (ISMG CMPP protocol), business processing software, network management software, firewall software and billing processing software that provides original work orders for billing.

The functions of each component of SMS gateway are as follows:

(1)SMPP agent system is connected with SMS center in GSM network according to version 3.3 protocol to realize efficient and reliable data transmission. The system supports the flow control function and can control the transmission flow according to the flow of SMSC.

(2) The communication agent system realizes the connection and protocol intercommunication with SP and other content providers. Based on TCP/IP protocol, it establishes a safe and efficient transmission channel between CMPP protocol and SP. The system supports the flow control function and can control the received flow according to its own business volume.

(3) As an important functional component of SMS gateway, firewall protects other related modules inside SMS gateway and realizes packet filtering and proxy for internal and external access.

(4) The short message gateway processing system completes the business processing of the gateway, including: routing inquiry to the tandem gateway, locally establishing the cache of the corresponding tables of the short message gateway ID, the user's mobile phone number, the SP ID and its IP address, establishing the corresponding table of the user's mobile phone number segment and the SMSC (Short Message Center) address, supporting the data distribution function, providing and processing the original billing bill, etc.

(5) The billing system of SMS gateway provides the original bill record (CDR) of SMS gateway.

(6) The service management system includes service management and gateway monitoring functions.

Business management is mainly used to complete statistical reports of business, generate reports, and add, modify and delete user data by operators.

Network management monitoring mainly completes the management of monitoring, inquiry, operation and maintenance of the gateway system.