VoIP.ms Sub Accounts

I use VoIP.ms for a phone that looks exactly like the Apple telephone emoji ☎️, down to the color:

I got around to setting up sub accounts in VoIP.ms so I can do (free!) internal dialing between my ATA-enabled desk phone and a softphone (currently set up via my laptop). I had to update my ATA configuration to register via my sub account instead of my main account, and I had to reconfigure things a bit in VoIP.ms to direct approved calls to the sub-account. But now I can officially make free calls inside of my account!