5.1 The mobile phone network operators who usually own and erect their own, or share masts for the antennae and dishes.
(5.1 The mobile phone network operators; own; T:usually) (5.1 The mobile phone network operators; erect; their own, or share masts for the antennae and dishes)
5.1 The mobile phone network operators 5.1 The mobile phone network operators
own erect
T:usually
their own, or share masts for the antennae and dishes