Shared Lines: Adding to existing extension

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I need the ability to add a shared line onto a phone that has its own phone number and extension. This seems like a basic idea but a huge missing feature. 

Here is my type of setup.. 

I have 8 phones. They all need their own extension. We have two "Main" numbers that I need to ring all phones when someone calls in. Any phone can answer the phone call and if needed "HOLD" the call back on that line. Then if someone else needs to pickup the call they simply press the appropriate line that the call was held on. We also need "Presence" buttons on each phone for all 8 phones which allows us to know who is on the phone and who is not. We call each other internally frequently so everyone needs their own extension. 

When will this be available? 
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Trey Horne

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Posted 5 years ago

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RC-Installer, Champion

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Trey the presence has been here for over  2 years.

What IP phone are you using?  

Once that is in place this ability will solve the other issue of picking up a call on hold

Let us know the phone type


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Trey Horne

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What about shared lines onto office extensions ?

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RC-Installer, Champion

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The phone does support presence so you are good there.

I guess I don't understand what you are asking with the shared lines in to office extensions.

Shared lines are their own extension on the system but have a specific use.   When you answer a call to any IP phone in the RC system the call in essance gets moved to that phone.  It does not work where "Line 1" has a call and you pick up line one.  Just does not work that way.  So if you get a call and someone else needs to get to it then put it on hold and they will Pickup the call from their phone.  This is where the presence comes in.

Hope this helps

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Mike Bruns

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Hi Trey,

You're running into the same issue I am.  And the issue is as much a pricing/marketing issue than a technical issue.  I'm not a telecom person, but I call it the "Breakroom Phone" problem.  Let me explain:

I have a legacy PBX.  my environment is:

1 Inbound 800 number, that will ring the first available free trunk line.  
4 Trunk Lines - At most, we can 4 inbound/outbound calls at any one time.
6 People with offices who use the phone frequently
8 Employees Total
14 Phones in the building
All 14 Phones will ring on an inbound call
All 14 Phones have presence features for the 4 trunk lines and other 13 phones.  I.E. they can see which trunk lines are in use, and can see (and transfer the call) to the other 13 phones.

Today, I'm paying Ringcentral just for the 800#, and my local cable company for the 4 Trunk Lines connected to the PBX.   I could (and may) move my trunk lines to Ringcentral, but that doesn't matter at this point.  Assume all lines are $25 each (Ringcentral or my local cable company).

From a pricing perspective, I love this setup, as I'm only paying for 4 lines (my trunk lines).  But, I have to deal with the old on-premise PBX.

I'd love to go to an entire Ringcentral environment and ditch the old PBX.  However, their problem (and my problem), is how to price the phone in the breakroom.

It's used maybe 20 minutes/month. It rings with every call and is rarely answered.  If it rings too long,  a user will answer that phone, put the call on hold, walk to their desk, pick up the call, and address the caller.


From Ringcentral's perspective, the phone in the breakroom is a line with an extension and has premise  that has all the features of a normal line. Therefore, it should be priced at $35 or $25 or $19/month, whatever the normal price is.  Assume $25.

From my perspective, it's rarely used, so I'm resistant to pay the full price.  If I did it for all 14 phones, my monthly spend for just the phone lines would go from $100/month  ($25x4 trunk lines) to $350  ($25x14 phones).  Not attractive. 


Shared lines is an attempt to go down that road, but they really can't give all the features of a real line for free. That's why they don't allow you to hold/transfer a call directly to a shared line.


I'd love to have Ringcentral introduce a "Breakroom Phone" with their office plan for $5 or $10 a month, without all of the government fees that jack-up the price of a normal phone line.  With these restrictions that make it fair for Ringcentral.

1)  You can't have more "breakroom phones" than full-price phones.
2)  You can't assign an inbound phone number only directly to a "breakroom phone"   It needs to be part of a simulring setup
3)  Limited number of minutes/month.


I'd welcome other people's thoughts.
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Shailesh Mehta

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Thank you for this post. Totally agree with your cost analysis. Ring Central would rock if they priced their Phone System by :
1. Tel numbers / DIDs / Toll free numbers
2. Extensions / users
3. Concurrent Calls or Trunk Lines or Shared lines
4. PBX platform - basic / office/enterprise /premium based on features

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