As an experienced technician, you are responsible for infrastructure design and global configuration changes. You are asked to deploy a Voice over Wireless LAN for your company. If the cells have the same channel, the separation between them should be:
A.
67dbm
B.
86dbm
C.
19dbm
D.
10dbm
The answer is A.
“The optimal VoWLAN cell boundary recommendation is -67 dBm”
– http://www.cisco.com/en/US/docs/solutions/Enterprise/Mobility/vowlan/41dg/vowlan_ch3.html
Oops. I wasn’t reading carefully. The answer is B, -86dBm.
“The guidance for the Cisco Unified IP Phone 7921G VoWLAN handset is for a power level boundary of -67 dBm, and a separation between adjacent AP channels of -86 dBm. The -67 dBm requirement is to minimize packet loss, and the -86 dBm requirement is to minimize co-channel interference from other AP cells on the same channel.”