Panasonic KX-TDE100 Features Manual page 170

1.11 Conversation Features
2.9.1 [3-1-1] Trunk Group—TRG Settings—Main
→ CO-CO Duration Time
→ Extension-CO Duration Time
2.13.5 [7-5] Miscellaneous—Dial Digits Limitation After Answering—Dial Digits
PT Programming Manual
[472] Extension-to-Trunk Call Duration
[473] Trunk-to-Trunk Call Duration
[502] Trunk Call Duration Limitation
Feature Guide References
2.2.1 Class of Service (COS)
170 Feature Guide