| 摘要 |
The object of the invention is to provide a method and an apparatus implementing the method which allow the subscriber to evaluate the authenticity of sender data in an incoming messaging message. Messaging centers are arranged to add an indication containing information on whether the identity of the sender of a message transmitted by the messaging center is guaranteed to data units containing a messaging message. If the data unit containing the messaging message comprises said indication, the subscriber's terminal indicates the information included in the indication to the subscriber.
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