That orange cable is for Xfinity Voice. Ive noticed them around where I live, and it can take upto 3 months for whomever Comcast has contracted to get it in the ground.
It will be next to impossible to get hold of anyone at comcast to figure out the infrastructure department responsible, but so far, ive never seen the Voice cable above ground for more that 90 days (Im starting to think its a contractual thing, that the contractor has 90 days to get it in the ground, and they literally wait until the 90 days are almost up, then they do the work).
We don't have Xfinity voice only Xfinity internet. We have called comcast several times. It's very frustrating and unsafe in my backyard with my children playing back there and our lawn service constantly having to work around it.