Looking for benchmarks and case studies on field operations in utilities/telcos. How they operate, which activities are insourced/outsourced, which contractual models, etc. any insights will be great.

Hi Filipe, if you give me more details, I can give you a price for the project. Best, Julio

Hi Filipe that is a wide and long scope, do you have anything specific? Over 25 years in Telecoms spent managing Field Force, running Procurement and supporting bids - feel free to contact me direct to see if I can help, cheers Toby

First part of your question you can ask as customer your mobile of fixed operator. Sure they will could provide sort previous information. Second part and more detail there need normal consulting. But you need to more detail specify your requests.

Filipe,
How long is a piece of string?  More seriously, from my experience the thing that kicks this off is the organisation’s operating model.  Best place to start on all of this is the TM Forum eTOM and in particular see - https://www.tmforum.org/resources/collection/ecosystem-partnering-toolkit/.
Unfortunately, the resources are only available to members, but you should get a good idea of some of the thinking in the industry by reviewing all of the TM Forum site. 
Best Wishes
John