Patent ID: 7643816

Claim:
A messaging system for use in a telecommunications network, said messaging system being for use by the telecommunications network to transmit a message to a remote device of a second user, the remote device of the second user being identified by means of a telephone calling identifier associated with a call setup request for a call session received from a device of a first user of the telecommunications network, said messaging system comprising: a storage system for storing data providing a predetermined definition of message content to be sent to a remote device of the second user; transmission means for, in response to a trigger event, invoking transmission of a message to said remote device of the second user, said transmission of the message to the remote device of the second user being further dependent on data received from the device of the first user after the call setup request, wherein trigger means for identifying that said trigger event occurs when it is determined that an account balance available for said device of the first user participating in the requested communications call session is below a predetermined threshold, and wherein said transmitted message includes message content defined at least in part by said definition of message content and said data received from the device of the first user after the call setup request.