Grandstream GPX 1630 losing waiting calls only enter one call.

[yfournier]

I only receiving one call at time the other calls failing to waiting.

 

[OlegR_3CX]

If the call comes directoy to your device and not from the Queue/Ring group, then you can enable the option in the Forwarding rule tab of the Available profile to Accept multiple calls :

 

[yfournier]

Is already market and i still have the problem.

if the phone don't have the firmware update this possible i still have this issue or not.