At least some ATA (analog telephone adapters) will allow you to connect two of them together without a voip server in the middle. Using g.711u as a codec will get you most of the way there - a stable network connection with little/no packet loss and jitter should get you the rest of the way.
Even better if you can find ATA's which do this AND use a wideband codec (aka 128kb/s instead of 56K) One specific thought is that obihai adapters also have a cloud based system to connect them together. This might work for you too. The trick will be to use a codec which passes enough data. gsm ain't gonna cut it (except perhaps at slower speeds). g.729 probably not either, g.711u is probably your only choice, unless you try a wideband codec. -forrest On Sat, Feb 7, 2015 at 2:58 AM, TJ Trout <[email protected]> wrote: > Does such a thing exist ? I need to take two devices that use modems to > communicate and make them talk over ethernet? Like a box that makes the > modem think it has dial tone, then establishes a virtual phone connection > to another box that rings the far device ? Does that make since ? > > Can't modify the existing system/modems, just want to eliminate the phone > line and communicate over ethernet... >
