| 摘要 |
A service node (520) for filtering in a wireless communication network short messages sent by a communication party (510) to a mobile device (530), said service node being arranged to intercept a first short message sent by the communication entity to the mobile equipment, find, upon determining that the intercepted short message is a data update short message comprising a data update for the mobile equipment, if the first short message comprises an indication that the communication party is requesting a proof of receipt message issued by said mobile equipment in reply to the reception of said first short message, in the same byte format as the first short message, provided the indication is found, modify the subsequent transmission of the first short message to the mobile device when said communication party matches a predefined criterion.
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