Welltech ePBX80 V.1.1 - Manual (Page 122)

Welltech Technology Co., Ltd. 122
Figure 5
Step 6: select a thick waveform to see the value of Ring ON time. Please select it
from front to end. This value is 0.27sec (270ms). (See figure 6)
Figure 6
Step 7: select a slim waveform between two thick waveforms to see the value of
Ring OFF time. This value is 0.27sec (270ms). (See figure 7)