Patent ID: 7796584
Filing Date: 2010-09-14
Classification: H04L

Abstract:
1. A gateway apparatus for conducting connection between a first communication network and a second communication network of respective different types, said apparatus comprising: decision means for deciding on whether data from at least one of said first and second communication networks has been delayed in arrival or lost based on at least one of the following events (i) and (ii): (i) comparing the number of encoded data actually acquired in a preset period and the number of encoded data expected to be acquired in said period, and determining that data has been delayed in arrival or lost when there is a difference between the number of data acquired and the number of data expected to be acquired, and (ii) attempting to acquire the encoded data in a preset period and, when the attempt to acquire encoded data has failed, determining that the data has been delayed in arrival or lost, wherein the acquired data is the same as the data acquired in a previous period; and control means for performing control so that, if the result of said decision indicates that the data from at least one of said first and second communication networks has been delayed in arrival or lost, data for causing a destination terminal of transmission on the other communication network to execute error concealment processing is generated when the number of data actually acquired is less than the number of data expected to be acquired or data acquired is discarded when the number of data actually acquired exceeds the number of data expected to be acquired.