Patent ID: 8099083
Filing Date: 2012-01-17
Classification: H04M,H04W

Abstract:
1. A method for providing a voice message to a user of a mobile station (MS) in a communications network having at least first and second independent mobile systems, each of said independent mobile systems including a Mobile Switching Center (MSC), Short Message Service Center (SMS-C) and Voice Message System (VMS), wherein each said VMS is identified by a unique identifier code, said method comprising the steps of: receiving a call request for a MS at a first MSC of first independent mobile system; routing said call request from said first MSC to said MS through a second MSC of a second independent mobile system, said second independent mobile system currently serving said second MS; if said second MS does not answer said call, storing a voice message in a Voice Mail System (VMS) of said first or second independent mobile system; requesting, by said VMS, that a Short Message Service Center (SMS-C) transmit an SMS notification message to said MS; and, transmitting, by said SMS-C, said SMS notification message to said MS through said second MSC, said SMS notification message including the unique identifier code of said VMS, whereby said second MS can retrieve said voice message by placing a call to said unique identifier code of said VMS when being served by any independent mobile system;