The color of the line is insignificant. Pregnancy tests can only tell you if you are pregnant. The darkness of the line is no indication of how pregnant you are or how far along you are. You can use the brand tests, even from the same box and get a lighter or darker line any time.
The phantom calls that you have recieved, also known as ghost calls is usually caused by either a poor quality phone line, aka has a high amount of noise or foreign battery due to the line or your on an older copper line.
You can trace problems with the radio frequency (RF) communications between Cisco Aironet WLAN components to four root causes: 1  Firmware and driver problems. 2  Software configuration problems. 3  RF impairments that include antenna and cable problems.  Client Issues.