If we have 2 IP Phones,
Phone A (primary no. is 1000)
Phone B (primary no. is 1001)
And they also shared a line with directory no. 2000
If someone dial # 2000, I can configure Phone A flashes only, Phone B rings+flashes. How to make Phone A is unable to pick up line 2000 by hook-off the headset, unless we press the line button next to line 2000?