Every telephone corporation and telegraph corporation operating in this state shall receive, transmit and deliver, without delay or discrimination, the conversations and messages of every other telephone or telegraph corporation with which a physical connection is made.
A.R.S. § 40-328
Duty of telephone and telegraph companies to handle messages of connecting companies
Official source: Arizona State Legislature. Reproduced from public-domain Arizona statutes; confirm against the official source for the current text. Not legal advice.