Panasonic KX-TDE100 Features Manual page 191

4.12 [2-7-1] Class of Service—COS Settings—TRS—
4.16 [2-8-2] Ring Tone Patterns—Call from Doorphone
4.18 [2-9] System Options—Option 3—
7.1 [5-1] Doorphone
PT Programming Manual References
[720] Doorphone Call Destination
[729] Doorphone Number Reference
User Manual References
1.10.1 If a Doorphone/Door Opener is Connected
TRS Level—Day, Lunch, Break, Night
Confirmation Tone—Tone 1 : Called by Voice
1.17.1 Doorphone Call
Feature Guide 191