Here in this discussion, and also in your other discussions, you have been posting from several different user IDs. I suspect that you have multiple OBiTALK portal accounts, and you've lost track of which is which. You can only have an OBi box added to one OBiTALK account at a time. If it is currently assigned to say, "pothound", you cannot add it to, say, "durk". You will need to sort this out.
Regarding the OBi numbers: All accounts have a "softphone" number starting with 290. It can't be deleted, and it is only useful with the OBiON softphone apps. Just ignore it, and if you wish, click the "Hide softphone" link at the upper right corner of the list, to make it disappear.
OBi 110 devices start with 200. I don't own one, but I am guessing that the OBi 100 devices may start with 300. OBi 202 devices start with 500 and 200 devices start with 510. OBi 1032s start with 610, and OBi 1022s start with 630.