Common protocols - Colour SMS

The Colour SMS protocol was developed by T-mobile Hungary for premium rate SMS services. It is an easy-to-use HTTP based SMS protocol. When a customer tries to access a premium rate SMS service by sending an SMS to a premium rate phone number, the SMSC transfers this message as an HTTP post request to the HTTP Server operated by the content provider. The content provider returns a response to the HTTP request in XML format. This response is sent as an SMS message back to the customer. Ozeki Message Server 6 is the HTTP Server operated by the service provider. (Figure 1.).

color sms protocol
Figure 1 - Colour SMS transport

Due to the nature of the HTTP protocol, it is always required to return a response to incoming messages in a short period of time. The Colour SMS protocol is often used with other connection methods, such as UCP to make delayed responses to incoming messages possible. Using a UCP connection, response messages can be sent at a later time, which is useful if you would like to set up periodic SMS notifications, such as weekly news service.

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