Excuse for my English.
Particularly: number PSTN
+74956877598, on e164.org ENUM Record
425462@voxalot.com.
If on
425462@voxalot.com registration ATA is active - the call (from other network) comes on it.
If on
425462@voxalot.com there is no active registration of the equipment - there is an вusy tone, a call on PSTN +74956877598 does not leave.
And with PSTN
+79161804698 -
233332@voxalot.com as.
Where to search for a problem?