SAO PAULO, Nov 24 (Reuters) - Highline do Brasil, a portfolio company of U.S. private equity firm Digital Colony, has reached a deal to acquire telecom infrastructure firm Phoenix Tower do Brasil, it said on Tuesday, adding new 2,500 sites to its portfolio.

Phoenix is backed by Blackstone Tactical Opportunities funds. After the acquisition, Highline will have 3,200 sites in Brazil.

The deal value was not disclosed in a joint statement.

Highline is also interested in acquiring assets held by Brazilian telecom firm Oi SA, such as its tower and fiber units. nL1N2F70OH (Reporting by Carolina Mandl; Editing by Richard Chang)