What is the recommended radius of a cell for a voice-ready wireless network?

What is the recommended radius of a cell for a voice-ready wireless network?

A.
6 dBm

B.
19 dBm

C.
5 dBm

D.
-67 dBm

Explanation:
At the edge of each voice cell, the received signal strength indication (RSSI) measurement should

be -67 dBm if you are using a Cisco Unified Wireless IP Phone 7921G. It is recommended that
you have RSSI above 35 at the edge of the cell, which is equivalent to -67dBm for optimum
preformance on the phone.
Each cell in the network should overlap with the adjacent cells in order to facilitate uninterrupted
handoff as a client moves between cells and to provide a minimum service even in case of access
point failure. For a typical voice deployment, Cisco recommends a 15 to 20 percent overlap of a
given access point’s cell from each of the adjoining cells