Panasonic DBS-2.3-400 Programming Manual page 246

Chapter 1. System Programming (FF1) Section 400-Programming
CO Delayed Ring Timer: FF1 3# 26# (0-15)#
Inbound DID Dial Numbers: FF1 8# 3# (DIDNo.)# (ExtNo.)#
DID/DNIS (enabling trunks for): FF1 8# 4# 6# (Trunk)# 2# (0-2)#
DNIS Number Setting: FF1 8# 4# 7# (DNISNo.)# (ExtNo.)#
Notes
Delayed Ring Timing. Timing for DID/DNIS delayed ringing is controlled
by the CO Delayed Ring Timer (FF1 3# 26# 0-15#).
Page 1-202 DBS Manual - Revised April 2000 DBS-2.3/9.2-400