Restcomm SMSC has 4 different sending modes

  • Datagram

  • Transactional

  • Forward and Store (FAS)

  • Store and Forward (SAF)

Datagram

Incoming messages will be immediately sent to a destination without being stored in the database.

Transactional

This is similar to datagram mentioned above, however, a return message (success or failure) will be sent to the originator.

Datagramm and Transactional have only one message delivery attempt. If message delivery fails, no further attempt will be made to resend the message therefore, the message will be dropped

Forward and Store (FAS):

In this mode, an immediate delivery is performed. If the attempt fails, the message will be stored into a database and then, periodic attempts at sending the message will be performed.

Store and Forward (SAF):

In this mode, the message will be stored in the database and then, periodic attempts at sending the message will be performed