1. A method for transmitting a CIR message from a server to a mobile client, the client supporting a plurality of CIR channels, the method comprising: a CIR message transmission step during which a first of the plurality of CIR channels is selected, and an attempt is made to transmit the CIR message via said first selected CIR channel, wherein if the CIR message cannot be transmitted by said first selected CIR channel, the channel selecting and transmission attempting are repeated using a second one of the plurality of CIR channels.