Cisco Systems 7920 IP manual Related Information

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∙Cisco 7920 does not support network−based directories. This will be supported in future software releases.

∙Cisco 7920 does not support XML−based applications. This will be supported in future software releases.

Related Information

∙Voice Technologies

∙Voice, Telephony and Messaging Devices

∙Voice Software

∙Voice, Telephony and Messaging TAC eLearning Solutions

∙Recommended Reading: Troubleshooting Cisco IP Telephony

∙Technical Support − Cisco Systems

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

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Contents Table of Contents Introduction PrerequisitesRequirements Cisco 7920 IP Phone Overview Wlan OverviewRF Overview Site Surveys and Design Recommendations Components UsedVoIP QoS Rssi∙ Delay Variation Jitter Not to exceed 30ms Security for the Cisco 7920 and Wlan Networks Network Sizing Number of 802.11b Devices per APNumber of 802.11b IP Phones per AP Page Numbers of 802.11b Phones per Layer 2 Subnet or Vlan Understanding Layer 2 and Layer 3 Roaming Understanding Roaming TerminologyLayer 2 Roaming Page Layer 3 Roaming VLANs Wlan QoS for VoIP Page Page Page Interconnecting WLANs to Cisco Campus Infrastructure Connecting APs to the Catalyst 3550 SMI or EMI Connecting APs to the Catalyst 2950 EI Connecting APs to the Catalyst 2950 SICaveats and Limitations Call Admission Control Designing Around the Lack of Layer 3 RoamingOther Caveats and Limitations Related Information