Cisco Systems 7920 IP Manual Do Utilizador

 Requirements....................................................................................................................................1
 Components Used.............................................................................................................................2
 Conventions......................................................................................................................................2

 Cisco 7920 IP Phone Overview..............................................................................................................2
 WLAN Overview....................................................................................................................................2
 RF Overview   Site Surveys and Design Recommendations................................................................2
 VoIP QoS................................................................................................................................................3
 Security for the Cisco 7920 and WLAN Networks................................................................................5
 Network Sizing.......................................................................................................................................6

 Number of 802.11b Devices per AP................................................................................................6
 Number of 802.11b IP Phones per AP.............................................................................................6
 Numbers of 802.11b Phones per Layer 2 Subnet or VLAN............................................................8

 Understanding Roaming Terminology.............................................................................................9
 Layer 2 Roaming............................................................................................................................10
 Layer 3 Roaming............................................................................................................................12

 VLANs..................................................................................................................................................13
 WLAN QoS for VoIP...........................................................................................................................14
 Interconnecting WLANs to Cisco Campus Infrastructure....................................................................18

 Connecting APs to the Catalyst 3550 SMI or EMI........................................................................19
 Connecting APs to the Catalyst 2950 EI........................................................................................20
 Connecting APs to the Catalyst 2950 SI........................................................................................20

 Using Cisco Emergency Responder for E911 calls with the Cisco 7920.............................................20
 Caveats and Limitations........................................................................................................................21

Cisco − Wireless IPT Design Guide for the Cisco 7920 IP Phone

i