Short Message Peer-to-Peer
Short Message Peer-to-Peer
(also SMPP)
Short Message Peer-to-Peer definition
Short Message Peer-to-Peer (SMPP) is a protocol for exchanging messages between SMS centers (SMSCs) and entities like mobile companies or app providers. It is a standardized protocol necessary for secure and efficient delivery of SMS messages.
See also: session layer, two-factor authentication
How Short Message Peer-to-Peer works
- SMPP operates over TCP/IP connections. To begin, a client (e.g., an app or messaging platform) establishes a connection with an SMPP server.
- Once connected, the client sends a “bind” request to the server, providing a username and password. The server checks the credentials and either accepts or rejects the request.
- Once the bind operation is successful, the client can start sending and receiving SMS messages. Messages are sent in a format that includes data about the sender, recipient, message content, and other parameters.
- SMPP provides delivery receipts and status updates (e.g., message delivered, failed, or pending).
- When the communication session is complete, the client can send an “unbind” request to disconnect or just cut the connection.
SMPP use cases
- Two-factor authentication (2FA). Many online services use SMPP to send 2FA security codes via SMS.
- Bulk messaging. Organizations use SMPP to send promo offers or event reminders to large audiences.
- Emergency alerts. Governments and emergency services use SMPP to send alerts to the public during critical events.
- IoT communication. SMPP can be used to send status updates, alerts, and commands between smart devices and apps.
- A2P (application-to-person) messaging. Apps and services send SMS messages to users for things like appointment reminders and order confirmations.