The actual service used to send SMS (Short Message Service) depends on your Global settings. If SMPP is configured in global settings the Message will be forwarded via this service, if not it will be forwarded via Twilio. If no SMS service is configured the forwarding will fail.

Twilio SMS

Messages will be sent via the Twilio SMS Service. (http://www.twilio.com).

You need to purchase a Twilio Account to use Twilio SMS. This medium uses Twilio's Web Service API to send SMS. You may need to adapt the firewall settings in the Application Server's environment for this forwarding medium to work.

SMPP forwarding

SMPP (Short Message peer-to-peer protocol) is a telecommunications industry protocol for exchanging SMS messages between SMS peer entities such as short message service centers. Redbex supports forwarding of messages via SMPP version 3.4

You may need to adapt the firewall settings in the Application Server's environment for this forwarding medium to work.

The configuration for SMPP is done in the global settings.

Message transformation

Messages forwarded via SMS will be sent to recipients as SMS (Short Message Service). SMS is a medium that limits the size of the sent messages.

When forwarding a message via SMS the Application Server will transform the original message in following way:

RB:<sender's username>

S:<subject of original message>

B:<Message body>

HTML formatting of the message body will be automatically removed.

If the constructed SMS exceeds the maximum number of characters allowed for a single SMS (defined in the Global Settings) the message will be truncated and the an ellipsis will be added at the end of the message.

If the maximum size of SMS messages specified in the Global settings exceeds the size allowed by the carrier, the carrier will either split the SMS into several SMS or will truncate the SMS himself.