I only have one ATA device called OBi110 and I want my sub-accounts to register to this box.
I read somewhere that for voip.ms, one first needs to create sub-accounts then link or point DIDs to them. The end result is the sub-accounts will be shown as registered to ATA, while the main account shows "no registration" even though VOIP works. I guess perhaps this is one of those progamming indiocracies of voip.ms.
I dont' know. I hope to be enlightened by more experienced OBi/VOIPMS users and even VOIPMS staff.
I think you're confused about how VoIP.ms works. It is perfectly fine to leave your OBi110 registered to the main account. It would be better if you told us what you're trying to do, rather than how you're trying to do it.
As PX said, you don't need sub-accounts unless you have multiple devices.
m. -- Dear Obihai, please fix the FXS to FXO Relay in the OBi110. Add this as your signature if you agree!