The terminology confusion is driving me nuts. I guess I’m telling Ooma not to advertise this as “10 lines”
I can only make 5 phone calls simultaneously (base FXS + 4 Linx). This means only 5 active “lines” can occur concurrently. When an addition call comes in, I get a call waiting signal and can answer that call by pushing “flash.” I’m not sure how you can call that “10 lines.” Even though you can have up to 10 telephone numbers, you can still only make 5 calls simultaneously. In a pbx, when you have 10 “lines” (10 telephone numbers), you can make 10 concurrent phone calls. Ooma can call it “10 lines” when Office allows 9 Linx and 10 concurrent conversations. Right now, Office allows only 4 Linx and 5 concurrent conversations.
According the the description of Office’s web page, Office can have additional 15 virtual extensions, therefore can setup all 20 extensions to ring simultaneously (1 FXS, 4 Linx, 15 Virtual). Example: Let’s say I have 15 cell phones and set them all up as virtual extensions. Then when I receive 20 calls simultaneously, I can have 20 people pick up all 20 phone calls, then you can have 20 concurrent conversations (granted that you have 15 cell phones pick up first leaving the Office available to route additional calls to the rest of the 5 physical extensions). So on the receiving end, you have 15 people on cell phones, 1 on the Office base FXS, and 4 on the Linx.
AFAIK, virtual extensions are not possible in a pbx.
Telo: Outbound calls - With Premier, I can make 2 concurrent phone calls, therefore it’s a legitimate “2 lines.” Inbound calls: I can actually setup a virtual extension with multiring. Example: Say I setup 2 HD handsets and my cell phone to multiring. When I receive 3 phone calls, I can have 3 concurrent conversations (granted that I use the cell phone to answer the 1st phone call, allowing the Telo to route 2 additional phone calls to the 2 HD handsets). I can actually setup additional extensions (more than 3) if I use google voice, but that’s another topic.