Design Guide

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Cisco Aironet 1520, 1130, 1240 Series Wireless Mesh Access Points, Design and Deployment Guide, Release 6.0
OL-20213-01
Connecting the Cisco 1520 Series Mesh Access Point to Your Network
• On the 802.11a or 802.11b/g/n > Voice parameters window:
– Load-based CAC must be disabled
– Enable admission control (ACM) for CCXv4 or v5 clients that have WMM enabled. Otherwise,
bandwidth-based CAC does not operate properly.
– Set the maximum RF bandwidth to 50%
– Set the reserved roaming bandwidth to 6%
– Enable traffic stream metrics
• On the 802.11a or 802.11b/g/n > EDCA parameters window:
– Set the EDCA profile for the interface as voice optimized
– Disable low latency MAC
• On the QoS > Profile window:
– Create a voice profile and select 802.1q as the wired QoS protocol type
• On the WLANs > Edit > QoS window:
– Select a QoS of platinum for voice and gold for video on the backhaul
– Select allowed as the WMM policy
• On the WLANs > Edit > QoS window:
– Select CCKM for authorization (auth) key management (mgmt) if you want to support fast
roaming. Refer to the “Client Roaming” section on page 106.
• On the x > y window:
– Disable voice active detection (VAD)
Voice Call Support in a Mesh Network
Table 19 lists a projected minimum and maximum of voice calls supported by radio type and mesh access
point role (RAP or MAP) for planning purposes.show
Table 19 Theoretical Voice Call Support on a Mesh Network
Mesh Access Point Role Radio
Minimum Calls
Supported
1
Maximum Calls
Supported
2
RAP 802.11a 14 18
802.11b/g/n 14 18
MAP1 802.11a 6 9
802.11b/g/n 11 18
MAP2 802.11a 4 7
802.11b/g/n 5 9
1. Bandwidth of 855 Mb/s with 50% of the bandwidth reserved for voice calls.
2. Bandwidth of 1076 Mb/s with 50% of the bandwidth reserved for voice calls.