Configure Time on Teams Devices

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AudioCodes recommends using Geolocation (the default setting) as the time zone configuration method. With this configuration, if no other changes to the time zone settings are made, the device retrieves the time from it's geographical location.

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Manual time zone setting is NOT recommended. Choosing a time zone manually may cause retrieval of the incorrect time zone, and cause functionality issues.

You can configure the time zone using one of the following methods, which are listed in order of preference for best performance:

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Geolocation (Default):

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The default geolocation method uses a devices public IP address to obtain it's location. If the devices are behind NAT they are using STUN server to discover their public IP addresses.

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A common STUN server example is Google's publicly accessible server: stun.l.google.com:19302 (default URL).

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DHCP Option 100/101 (posix/tzdbx):

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Configuration is obtained from DHCP server.

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Admin Provisioning:

Use one of the following:

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Teams Admin Center, created under configuration profile.

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Device Manager, created in configuration parameters setup.

The supported parameters for Device Manager configuration can be found in product specific Admin and User guides. For Teams Admin Center refer to Microsoft documentation > Configuration profile.

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Administrators can manually define the NTP server to comply if necessary with enterprise security requirements, if those requirements preclude using DHCP Option 42.

Manual configuration takes precedence over DHCP Option 42 and the time servers.

Two ways to manually define the NTP server are available:

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in the phone's user interface

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in the phone’s .cfg configuration file, using the parameter 'date_time/ntp/server_address'

See also here for more information.

In most regions, Daylight Saving Time changes the regional time twice a year. DST Validation allows maintaining accurate time. Two options for phones to get the correct time are:

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[Recommended] If the DHCP server offers Timezone Options (100/101), the phone will set the obtained time zone and display the correct time on the screen; the time will be calculated based on an embedded Time Zone database, factoring in DST.

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If the DHCP server offers Time Offset Option only (2) and if the Timezone priority mechanism is determined to be on DHCP and not on GEOLOCATION, the phone will assign the obtained time offset to the first matched region in the list but there is a good chance it won’t reflect the actual geographical location, therefore the displayed time might be incorrect in some cases. For example, if the given time offset is GMT-5 and the phone is located in Mexico, the phone will get the time (and the DST setting) from central time and not from Mexico because in GMT-5 there is also Central Daylight Time.