Cal. Educ. Code § 17096

Commencing with leases entered into on or after January 1, 2000, the plans and specifications for portable classrooms funded pursuant to this chapter shall include a provision for a telephone in each portable classroom. The connection from the portable classroom to a public switched telephone network, as set forth in Section 17077.10, shall be made by the school district at the time of the installation of the building. However, a school district may meet this requirement by utilizing wireless technology equivalent to a hard-wired connection to a public switched telephone network.