I live in Samoa in the South Pacific where our link to the world is via satellite. The usual ping times to my VoIP server in Australia is about 830 ms. This creates significant latency and not great voice quality but it is generally acceptable. To improve the quality I have had to change several settings on my Sipura 3000. Most importantly, I must have the T1 timer set at 2 sec or more or I cannot initiate calls. Other changes are to increase the jitter buffer to maximum and set the RTP packet size to 0.080 (default 0.030). I have not downloaded the 23MB of file as yet because it will be useless to me if I cannot adjust these settings in the VoIP setup. None of these is mentioned in the manual. Does anyone know if these settings are available in Version 5 or if not, are they are being considered in a future version? Ian.