1. Best Practices for Voice Deployment with Cisco WLAN Infrastructure
  2. Device Settings
  3. Default, Supported, and Recommended for Voice Device Settings
  • Best Practices for Voice Deployment with Cisco WLAN Infrastructure
Default, Supported, and Recommended for Voice Device Settings

Default, Supported, and Recommended for Voice Device Settings

Note the following:
  • Pairwise master key identifier (PMKID) is disabled on the device by default. If your infrastructure configuration is configured for PMKID, enable PMKID and disable the opportunistic key caching (OKC) configuration.
  • The Subnet Roam feature allows you to change the network IP of the WLAN interface when the network is configured for a different subnet on the same extended service set identification (ESSID).
  • In execution of default fast transition (FT) (also known as FT Over-the-Air), in case that other non-FT Fast Roaming Methods might be available on the same SSID, see Fast Roam Methods in Table 5 and relevant notes in General WLAN Recommendations.
  • Use mobile device management (MDM) agents to change settings. Use the user interface (UI) to change parameter subsets.
  • For voice applications, and for any highly-dependent client-server communication apps, it is not recommended to use the Android battery optimization feature (also known as Doze Mode) in device management tools. Battery optimization interrupts communication between dependent endpoints and servers.
  • Media access control (MAC) randomization:
    • From Android Oreo onwards, Zebra devices support the MAC randomization feature, which is enabled by default. Disable or enable this via MDM or via Android privacy setting
      Use Device MAC
      :
      • When enabled in Android 10 versions and earlier, the randomized MAC value is used only for Wi-Fi scanning of new networks prior to association with the intended network (prior to new connection), however, it is not used as the associated device MAC address. The associated MAC address is always the physical MAC address.
      • When enabled in Android 11 onwards, the randomized MAC value is also used for association with the intended network. The randomized value is specific for each network name (SSID). It remains the same when the device roams from one AP of the connected network to different AP(s) of the same network, and/or when it has to fully re-connect to the specific network after being out of coverage.
    • The MAC randomization feature does not affect voice performance and it is not necessary to disable this feature for general troubleshooting purposes. However, in some specific situations, disabling it may be helpful during the troubleshooting data collection.
Device models in Table 1 prefixed with “*” are assumed to be provisioned with Zebra's mDNA software license in the voice deployment. Table 2 does not apply to these devices if they do not have that license.
The following table lists the default, supported configuration, and recommended voice settings.
The default value is recommended in the Recommended for Voice column, which is also the default value populated in recent Product Releases. Observe the notes in the Default Configuration columns. If a prior release is applicable in the deployment and the Recommended for Voice setting is the default, then it is recommended to reconfigure the respective item in the older release to match the noted value in the newer release.
Default, Supported, and Recommended Voice Device Settings
Feature
Default Configuration
Supported Configuration
Recommended for Voice
State11d
Country selection set to Auto
  • Country selection set to Auto
  • Country selection set to Manual
Default
ChannelMask_2.4 GHz
All channels enabled, subject to local regulatory rules.
Any individual channel can be enabled or disabled, subject to local regulatory rules.
Device Mask matches the exact set of network side operating channels configuration.
It is recommended to configure both the device and the network to a reduced set of channels 1, 6, and 11, if WLAN SSID is enabled on 2.4 GHz.
ChannelMask_5.0 GHz
  • Up to Android Oreo Build Number 01.13.20, all non-dynamic frequency selection (DFS) channels are enabled.
  • From Android Oreo Build Number 01.18.02 onwards, Android 9 and, Android 10, all channels are enabled, including DFS.
All the above are subjected to regulatory.
Any individual channel can be enabled or disabled, subjected to regulatory
Device Mask matches the exact set of network side operating channels configuration.
It is recommended to configure both the device and the network to a reduced set of only non-DFS channels.
For example, in North America, configure the network channels to 36, 40, 44, 48, 149, 153, 157, 161, 165.
Band Selection
Auto (both 2.4 GHz and 5 GHz bands enabled)
  • Auto (both bands enabled)
  • 2.4 GHz
  • 5 GHz
5 GHz
Band Preference
Enabled
  • Enable for 5 GHz
  • Enable for 2.4 GHz
  • Disable
Enable for 5 GHz, if WLAN SSID is on both bands.
Open Network Notification
  • Enabled in Android 10 onwards
  • The default is disabled in Android 10 versions and earlier.
  • Enable
  • Disable
Default
Advanced Logging
Disabled
  • Enable
  • Disable
Default
User Type
Non-Restricted
  • Enable
  • Disable
Default
Cisco Centralized Key Management (CCKM)
All other models: Enabled if this is the only key management method in the SSID configuration. This is not used if 11r is also enabled on SSID.
TC52ax: Disabled. Requires staging change to enable if this is the only key management method in the SSID configuration.
  • Enable
  • Disable
Default
TC52ax: Not recommend to enable for voice centric deployments, except forced by SSID configuration.
FT
Enabled
  • Enable
  • Disable
Default
OKC
Enabled
  • Enable
  • Disable
Default
PMKID
Disabled
  • Enable
  • Disable
Default
Power Save
NDP (Null data power save)
Note
: Devices with WiFi6E are set with a Power Save default of 6E/TWT (6E Target Wake Time). When deployed in a non-6E WLAN, they dynamically auto-default to NDP.
  • NDP
  • Power save polling (PS-POLL)
  • Wi-Fi multimedia power save (WMM-PS)
Default
11k
Enabled
  • Enable
  • Disable
Default
11v
TC52ax: Enabled from build 11.16.05 with U120 onwards
All other models: Enabled from build 11.20.18 onwards
  • Enable
  • Disable
Use the default for each build version.
Subnet Roam
Disabled
  • Enable
  • Disable
Default
11w
After Android 10: Enable / Optional
Before Android 10: Disable
  • Enable / Mandatory
  • Enable / Optional
  • Disable
Default
Channel Width
2.4 GHz - 20 MHz
5 GHz - 20 MHz, 40 MHz and 80 MHz
Not configurable
Default
11n
Enabled
  • Enable
  • Disable
Note: Disabling this also disables 11ac.
Default
11ac
Enabled
  • Enable
  • Disable
Default