After you perform a post-installation RF survey for a customer with ID 339696181, you discover that all areas have at least -67 dBm RSSI, 25 dB SNR, and 10 percent cell overlap. The customer, however, reports one-way audio issues on VoWLAN phones.
Which option is a possible cause of the issue?
A . The cell overlap is too low.
B . There are coverage black spots.
C . Non Wi-Fi interference causes a high noise floor.
D . The RSSI is too high.
Answer: D