4 ms·
The very affordable grandstream ATAs will handle pulse without additional hardware. http://www.classicrotaryphones.com/forum/index.php?topic=20386.0 http://www
by danachow 5y ago
The very affordable grandstream ATAs will handle pulse without additional hardware.
http://www.classicrotaryphones.com/forum/index.php?topic=20386.0 http://www.classicrotaryphones.com/forum/index.php?topic=203...