I just tested this with the Office with only 1 extension active (disabled all Linx adapters) and had voicemail turned off to see what happens. I setup the Virtual Receptionist to answer the calls. Then I made 3 simultaneous calls to the Office. The VR picked up all calls. I pressed 0 on the 1st phone to ring the Office. Use the phone on the base of the Office to answer call. At this time the Office is occupied with the first phone call. Since all the Linx are deactivated, I do not have the capability to answer another call.
Then on the 2nd phone, I pressed 0 to ring the Office. All I hear on the 2nd phone is a ring tone. On the Office side, I hear the call-waiting tone on the base phone. Then the call drops since voicemail is not activated.
If Call Queuing works (like on a pbx), the VR would have kicked in to say something like "everyone is busy assisting other customers, please continue to hold. If you want to leave a message, press 1"
http://www.freedomvoice.com/virtual-pho ... ueue.shtml
I hate to do this in the Ooma forum, but you'd have to search for an unlocked fxs gateway box, because the Ooma boxes (Hub, Telo, and Office) are locked to Ooma's server. Then you can search for other services that offer Call Queue.