Patent ID: 6556821
Filing Date: 2003-04-29
Classification: H04M,H04W

Abstract:
A method for determining in a wireless office system (5) when voice mail messages, for a user of a mobile station (ms1, ms2, . . . , msM) having a subscription in the wireless office system (5), are received at a voice mail system (15), the method characterised by comprising:measuring a duration of a greeting message associated with the mobile station (ms1, ms2, . . . , msM) and the voice mail system (15); measuring a connection time with the voice mail system (15) when a call for the mobile station (ms1, ms2, . . . , msM) has been forwarded from the wireless office system (5) to the voice mail system (15); and determining whether a voice mail message for the mobile station (ms1, ms2, . . . , msM) has been received at the voice mail system (15) by comparing the connection time with the duration of the greeting message.