We have a global voip implementation being initiated within our organization. In our asain pacific region we would like to cluster our primary and subscriber in Hong Kong with a secondary subscriber in Tokyo. There are latency issues though, working with two of the largest providers in the area (singtel and anc.) They have indicated to us that the best latency that they are currently seeing between data-centers in HK and Tokyo is 55ms. The documentation indicates that the highest possible RTT for ICCA traffic is 40ms. Will it be possible to operate at 60ms? What difficulties will the system have?