This invention relates to a method and apparatus to provide Short Message Services (SMS) provisioning when different SS7 signaling networks are in use. The method can be used when mobile units are roaming in a SS7 network different than the MS home network, and when the MS is roaming inside or outside...http://www.google.fr/patents/US6917813?utm_source=gb-gplus-shareBrevet US6917813 - Provision of short message services