Bringing in fiber - DMARC to our floor

Posted on 2016-10-31
Last Modified: 2016-11-02
We are thinking on ordering fiber service to the 9th floor suite of our building.  The provider will only deliver to the DMARC.  Typically is that on the bottom floor of a building or is that off site?   Would I have to hire a second company to come in and install from DMARC to our switch located on our suite floor?

Any advice is appreciated
Question by:al4629740
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LVL 33

Expert Comment

ID: 41867246
The DMARK (or demarcation point) is the point at which the public utility network ends and connects with the customer's on premise network (network is used in the loosest terms).  The purpose is to provide a clear definition of responsibility with regards to the costs associated with the maintenance of said networks.  In the case of telco and isp, this is generally the termination point of where the service enters the building and a customer facing interface can be realistically and safely installed.  In cases where there is shared occupancy (or multi-tenancy) space this decision is generally left up to the property owner.

In my experience, multi-floored properties generally allow for demarcation point's to terminate into floor specific spaces (or utility closets).  Check with your property owner to ensure that the utility is allowed to dmark into your utility closet.


Author Comment

ID: 41867541
It is a multi tenant building.  If its terminated downstairs, wouldn't there be a connection already from downstairs to our suite from the prior tenants?
LVL 33

Expert Comment

ID: 41867552
It is possible but would still warrant further investigation.  You want to ensure that the existing extension, if any, is the correct specification with regards to the requirements of not only the ISP equipment but your own as well.


Author Comment

ID: 41867574
Can you give an example of what you mean?  Are you talking about the quality of the cable or type of cable?
LVL 33

Accepted Solution

it_saige earned 500 total points
ID: 41867636
First and foremost is type, if your ISP will require that you have a fiber extension versus a CAT6 extension it is better to find out now.  But you also want to ensure that the cable is where you need it to be at for your own equipment as well as that it is properly terminated.  You also want to ensure that your wiring has no shorts in it.


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