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Reply To: VOIP over ISDN


Hello Kris, Noname,
To address your questions. A latency of 550-660ms is a little bit high for voip. However 128kbps is plenty enough bandwidth to run 3-4 lines using g.729 or g.723. So the voice quality will not suffer, however there will be a noticeable delay in the voice transmission. I’ve heard voip calls on similar satellite setup’s. The delay is not the worse than anything i’ve heard from a long distance call over a land line. Also about the A200, they have been discontinued by quintum. They were the only unit that Quintum didn’t build themselves. You definately want to stay away from it, as it does not have the high quality and reliability of the other Quintum units. If you have any questions about implementation of voip send me an email at