Panasonic KX-NS1000 Manual page 206

2.18.1 Doorphone Call
10.7.1 PBX Configuration—[2-7-1] System—Class of Service—COS Settings—TRS—
Lunch, Break, Night
10.8.2 PBX Configuration—[2-8-2] System—Ring Tone Patterns—Call from DOORPHONE
10.9 PBX Configuration—[2-9] System—System Options—Option 3—
by Voice
13.1 PBX Configuration—[5-1] Optional Device—Doorphone
User Manual References
1.11.1 If a Doorphone/Door Opener is Connected
206 Feature Guide
TRS Level—Day,
Confirmation Tone—Tone 1 : Called