NEC Univerge SV9100 - Figure 5-119 WM-L UNIT Release Button

Issue 3.0
SV9100 System Hardware Manual 5-101
7. To separate the multiline terminal from the WM-L UNIT,
press the release button and slide the multiline terminal up
(refer to Figure 5-119 WM-L UNIT Release Button).
Figure 5-119 WM-L UNIT Release Button