The new contract covers Pernod Ricard's 43 wineries, vineyards and bottling facilities in New Zealand and its offices in Auckland, Wellington, Sydney and Adelaide.
A media spokesperson for AT&T told CRN the challenge of the project was to design a solution to connect large offices, vineyards in relatively remote locations and individual users.
Rixon, governance manager for Pernod Ricard Pacific, said all users needed the same level of secure access in a cost effective manner.
"AT&T New Zealand team has been looking at realistic and cost effective solutions to meet the needs of the business.
"In choosing AT&T we have a seamless network, with a single provider managing both our domestic and trans-Tasman requirements."