Substation Box on property

The "box" will be within an easement, which is controlled by your local city or county government. As far as service goes you can put your information in the link for check available services to see what's available to you.  

I appreciate your comment! When we put our address in, there are no services available which is why we are wondering what the box does that is just a couple hundred feet from our home. 

Use this link to see who serves your area you may not even be in an AT&T area.  I can only guess what's in the terminal, not all are for customer distribution service.  Since I have no idea where you're located the link provided will tell you the service in your area. 

PICS? The substation may be just a relay to move the signals farther down the line.

If your in a more rural or semi rural area, what does the neighbors have access to?

It is possible your in a LEGACY DSL service, best speed of internet 6 with 150G data cap.

The company quit accepting new accounts for LEGACY service as they prepare to turn off this older equipment. If this is indeed your case, for about 20% of ATT footprint, the option would be cellular service, aka hotspot. 

You may also be in an area that was sold off to another telco provider such as CenturyLink, Frontier, TDS, Windstream, etc... in these cases ATT would not offer service(s) as the outside wiring and equipment belongs to a different company..

Frontier purchased all of the Connecticut (SNET) operations back around 2015. 

They also have purchased GTE/Verizon assets in California, Florida, and Texas some years back.

CenturyLink purchased USWest (Quest) baby bell operations a long time ago and some rural areas from others.

Similar TDS bought out several smaller rural operations. 

Zip code?

AT&T is under no obligation to describe what the box is for 

We bought a property with an AT&T substation on it. The property is not shown on the County Appraisal District map as owned by AT&T. Who do we contact to determine whether there was a legal easement that provided for the placement of this substation, and the ongoing terms for the substation to stay on the property.

99% sure its in a legal easement at&t doesnt place facilities all willy nilly  

Your local taxing authority controls the size and placement of easements.  They wouldn't have put it there if it weren't legal. 

We bought a property ATT leases for a small substation. We don’t have the original lease and would like a copy. Who do we contact?

@prbutler7 

Whomever you purchased the property from…

I would like to think that should have been covered by home owners inspection and on the deed.