| 摘要 |
<p>A gateway server (30) transmits, when it receives an e-mail addressed to a mobile device (10), an arrival notice to the mobile device (10). The gateway server (30) grasps, when it receives an acknowledge response (hereinafter referred to as 'Ack') to the arrival notice from a mobile packet communication network (20), the status of the mobile device (10) from the kind of the Ack, decides whether to transmit an e-mail body or not, and changes the time till it transmits again the arrival notice to the mobile device (10) in accordance with the status of the mobile device (10) in case of a failure.</p> |
