Toshiba Strata DKT - Manual (Page 142)

Centrex Application
Delayed Ringing
128
Strata CIX and CTX IPT/DKT Telephone 11/05
Delayed Ringing
Outside line or Centrex line(s) can be programmed for a 12-second and/or 24-second
ring delay at stations to permit alternate answering conditions. Answer the line when
your telephone is ringing.