Slightly different here in Manitoba regarding who does what.

The electricial utility and not the E/C is currently reponsable to run all the lines(incl. tel and cable) to the foundation wall in a common trench if new residential construction.

They are usually coiled in a flat plywood case at the lot line during utility rough in of the development as the foundations are not in yet.

A different crew digs the box up and trenches to the foundation wall once the house is ready for the utility stub up.

Our telco (MTS) even does repairs up to the interface of u/g lines.