New or replacement switching systems installed after January 1, 1999, shall be capable of providing custom calling features. At a minimum, custom calling features must include call waiting, call forwarding, abbreviated dialing, caller identification, and three-way calling. New or replacement switching systems installed after January 1, 1999, shall also be capable of providing enhanced 911 service.
S.D. Admin. R. 20:10:33:04
General Authority: SDCL 49-31-77, 49-31-85.
Law Implemented: SDCL 49-31-3, 49-31-77, 49-31-85.