You are allowed to open up to 2 concurrent connections:
- 2 Transceiver binds.
- 1 Receiver and Transmitter binds.
When connecting to SMPP Center’s SMPP you should select one of these modes of operation:
SMPP Transmitter / Receiver Mode
Capable of submitting messages, querying the status of messages and system parameters but it is not able to receive short messages. To be capable of receiving delivery receipts of short messages, it will be necessary also to bind as a receiver.
SMPP Transceiver Bind
SMPP version 3.4 introduced the transceiver type of connection. It is similar to having a transmitter and receiver connection over the same network link and allows submitting and receiving.