NEC Univerge SV9100 - Figure 9-164 Sky Background; Figure 9-165 Sunlight on White Wall; Figure 9-166 Shining on Doorphone

Issue 3.0
9-170 Installing SV9100 Optional Equipment
 Due to possible effects on images transmitted by the doorphone unit,
do not install in the following environments:
If a strong light is shining on the door phone station, the visitor’s face
may not be distinguishable.
 Place where most of the background uses the open sky.
 Where the background is a white wall reflecting direct sunlight.
 Where strong, direct sunlight is shining on the doorphone.
Figure 9-164 Sky Background
Figure 9-165 Sunlight on White Wall
Figure 9-166 Shining on Doorphone