Ooma Office Line Concept

I currently have a Ooma Hub/Scout with two phone numbers.

I am interested in the Ooma Office due to the features. Has anyone migrated to Ooma Office yet? Is it possible to move my existing two numbers to Ooma office?

The pricing is unclear on Ooma Office as well.

Ooma Office (1 line, 1 number)) $19.99 per month
Additional Phone Line (includes 1 number) $19.99 per month per line
Additional Phone Number $9.99 per month per number

How much for two phone numbers per month? Is it $40 or $30?


Each phone line = $19.99/mo
Each phone line comes with a phone number
Each additional phone number = $9.99/mo

$19.99/mo + $9.99/mo to get 1 phone line with 2 numbers.

“Each phone line can handle one simultaneous external incoming or outgoing telephone call. Depending on how busy your business is, you may purchase additional lines of capacity to ensure that you don’t miss any calls. Once you have used up your capacity of phone lines, incoming calls will receive a busy signal and outgoing calls cannot be placed. Ooma Office supports up to 10 phone lines, enough capacity for the busiest of businesses!”

Unless you have 2 phone lines, you can only have 1 phone conversation going on at a time.

Still having trouble with that answer.

Currently I have two phone numbers with Scout/Hub. One assigned to the scout and one to the hub.

I am having a trouble with their delineation between phone number and phone line.

Can anyone give me a more detailed response? Thanks.

The Office does not have the instant second line capability that you get with Premier on a Hub or a Telo.
In fact there is no concept of Premier with the Office.
It comes with one phone line. One phone call at a time.
If you need two simultaneous calls then you need a second phone line on the Office.

Each phone line comes with one phone number. You can have more than one phone number with one line but only one number can be in use at a time.

When a second line is added it comes with a second number.
Now it is possible to have two simultaneous calls in progress using a number for line 1 and the number for line 2.

The web page regarding the Office is misleading. I currently have 4 Linx adapters hooked up to the Office and can make 5 concurrent phone calls, while subscribing to only ONE phone number (ONE line).

The only time you’d need to subscribe to a 2nd line is that you want a DIRECT inbound extension to ring. For example, if you want to add a fax line, you’d want to subscribe to a 2nd number since you don’t want other phones (extensions) to ring when someone is trying to fax you. The fax would have its own number, therefore only the fax would ring.

This is a bug. Trunk limits are not fully deployed yet.

Kindly explain exactly what you mean by “This is a bug”, and what will be practical effect when the bug is fixed, that is when “trunk limits… are fully deployed”.

1 phone line = 1 concurrent phone conversation is currently not being enforced hence a bug.

Even with unlimited trunks on the Office, I’m still hesitant to make the switch to the Office. One feature I use on the Telo everyday is the voicemail buttons. Because of this, I will probably integrate the Office and the Telo somehow, but I’ll create another thread for it.

I don’t see a comparison between the Telo and the Office, so I created one

A couple of comments:

  • Ooma Office supports up to 10 lines (not 5)

  • You can have up to 5 concurrent conversations using physical extensions (FXS + 4 Linx) [HD2 support is coming] *

  • Any remaining lines can be used to make another outbound call by putting an existing call onhold or can be used
    to set up inbound conversations using virtual extensions

  • Extension dialing - see https://www.ooma.com/forums/viewtopic.php?f=15&t=15858

  • Telo does support ring groups

  • Telo has no conferencing bridge, but does support 3-way conferencing

  • physical means using CPE, so your own Ooma hardware (virtual is all in the cloud)

Tom, ooma Telo supports up to 2 concurrent phone calls while ooma Office supports up to 10 concurrent phones calls right? Although Office can handle up to 5 physical lines, the 10 concurrent calls can possibly expand to virtual extensions?

The terminology confusion is driving me nuts. I guess I’m telling Ooma not to advertise this as “10 lines”

Outbound calls:

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.

Inbound calls:

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.

Although Office can handle up to 5 physical lines, the 10 concurrent calls can possibly expand to virtual extensions?

Correct, I clarified my post to reflect that.
Lines are counted in the cloud. Five of them can terminate on CPE, the local Ooma hardware.

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).

You can have 20 extensions. They can be a mix of physical or virtual. The number of physical extensions is limited by the hardware to 5. You can distribute the available lines over any of these extensions. In other words you cannot have 20 extensions ringing. The maximum is 10.

Thanks for clarifying, but I’m still having a problem with Ooma calling it “10 lines,” 5 physical and 5 in the cloud. This is why I believe the “10 line” terminology is misleading. I listed the Office as having only 5 lines, because I can only make 5 outbound calls simultaneously. This is only equivalent to a 5 line pbx for outbound calls. In a 10 line pbx, I can make 10 concurrent outbound calls.

Can a firmware update of the Office allow 9 Linx physical extensions? If this is possible, then the Office has the capability of making 10 concurrent outbound calls. But until this happens, I will challenge Ooma’s claim of calling this feature as having “10 lines”

Another question relating to the cloud: When an inbound call is transferred from a physical extension to a virtual extension (e.g. Linx to a cell phone), is the inbound caller being connected to the cell phone via Ooma’s server until they hang up? If so, then this can introduce possible voip delays. So far, all of the call transfers I’ve tested (about a dozen) work impressively well with no noticeable voip delays.

Remember the line concept is a cloud thing, because that’s where the PBX lives. The Ooma hardware is just like having 5 separate phones. With Ooma Office the line concept that exists on the telo disappears.

As for your example, yes that call will take up a line in the cloud.

As of last night trunk (line) limits are now enforced. Forwarding currently requires 2 lines, since it involves both an inbound and outbound call. We’re working to fix that.

update to my earlier post on 5/26:

  • An Ooma Office account can be provisioned up to a maximum of 10 lines (enforced on the server)

  • Each line should be viewed as a trunk to the outside world (extension to extension calling uses no lines)

  • An Ooma Office account can define up to 20 extensions. These can be a mix of physical or virtual extensions.

  • You can distribute the available lines over any of these extensions, as follows:

  • Physical extensions map to the Ooma Office base. The base supports up to 5 physical extensions (base phone + 4 Linx)*

  • Virtual extensions map to outside parties (‘outside’ in the sense of outside the Ooma Office base, e.g. a cell number)**

  • A physical extension can have up to 2 lines in use (one active and one onhold, or both active in a 3-way conference)

  • A virtual extension only ever has 1 line in use (though forwarding an inbound call to the outside really takes 2 trunks)

  • Telo does support ring groups

  • Telo has no conferencing bridge, but does support 3-way conferencing

  • HD2 support is coming (an HD2 counts as one physical extension just like a Linx)
    ** It doesn’t make much sense but you can map a virtual to a physical extension


  1. How many extensions can ring simultaneously?
    => 10 (which can be a mix of physical and virtual, but up to 5 physical)

  2. How many lines are taken up when I forward a Linx to a cell number, but also ring the Linx?
    => 1 (only the inbound call is counted)

  3. How many lines are taken up when a Linx calls the base phone or its own Virtual Receptionist?
    => 0 (inside calls don’t count against lines)

  4. How many calls can be active on the base at the same time?
    => 10 (each physical extension has a 3-way conference)

  5. How many calls can be onhold on the base at the same time?
    => 5 (each physical extension has a call onhold)