Gateway connection of SMS gateway

The short message gateway and the short message center should be interconnected by a dedicated line. The short message center should be reformed. The main contents of the reform are:

On the basis of the original SMPP 3.3, the function of the protocol is extended, so that the SMS extension entity (SME), namely the SMS gateway, can get the result of whether the SMS was sent successfully, so that the SMS gateway can record the billing, and can use CMPP to send the information of whether the SMS was sent successfully to SP. Each SP that provides services only needs to connect to the Internet, and can connect to the SMS gateway through the Internet.

As the SMS gateway needs to be responsible for the routing query of SP, in principle, the service of an SP can only be accessed from one SMS gateway, so as to avoid the routing confusion when the uplink SMS of SMS on demand service is sent to SP.

For very large SP, such as Sina.com, it is allowed to access multiple SMS gateways to divert SMS traffic. In this case, SP will provide services to VOD service by partition. For example, suppose Sina connects two SMS gateways in Beijing and Guangzhou respectively, so Beijing gateway is responsible for the business in the north and Guangzhou gateway is responsible for the business in the south. When the short message gateway in Tianjin inquires about the route of Sina from the tandem gateway, the tandem gateway will return the address of Beijing short message gateway as the forwarding gateway. When the short message gateway in Guangxi inquires about the route of Sina from the tandem gateway, the tandem gateway will return the address of the short message gateway in Guangzhou as the address of the forwarding gateway.