Disabling Device Enrollment Services; Firmware Downgrade With Des Provisioning - Avaya B199 Installing And Administering

Maintenance
• Never: To not send the report and to remove the DES warning icon.
Note:
With R.1.0.2 and earlier, B199 Conference Phone does not have the reporting feature.
Therefore, the phone does not send the report when you choose Yes.

Disabling Device Enrollment Services

About this task
After the first boot, as the administrator, you can disable Device Enrollment Services (DES)
directly on the phone or through the web interface.
Procedure
Do one of the following:
• On the phone, navigate to Settings > Device Management > DES Provisioning > DES
Enablement, and tap Disabled.
• On the web interface, navigate to Provisioning > DES Provisioning, and click Disabled.
• In DHCP option 242, set DES_STAT to 0.
• In the configuration file, set DES_STAT to 0 or 1.
The DES_STAT parameter received in DHCP option 242 can have one of the three values: 0, 1,
or 2. The following table describes the values:
DES_STAT value
DES=0
DES=1
DES=2

Firmware downgrade with DES provisioning

You can initiate a downgrade by uploading an older firmware than the one currently available on
the DES server. In this case, DES provisioning starts automatically. Avaya Conference Phone
B199 applies the received configuration and restarts with the downloaded settings.
After a downgrade, the phone tries to make provisioning with each reboot. The reboot attempts
happen if previously the phone used DES for provisioning. After completion of the first successful
provisioning, the phone stops provisioning attempts on the next reboot.
You can also do a factory reset to stop the phone provisioning attempts on reboot.
February 2021
Description
DES is completely disabled and you cannot see any settings related to DES on the
phone or on the web interface. After factory reset, the DES feature is enabled in the
configuration file.
DES is disabled, and you can enable or disable DES using the phone interface or
the web interface.
DES is enabled and you cannot disable DES from the phone or the web interface.
The provisioning using DES is performed automatically during the phone start-up.
You can start the automatic provisioning by pressing the DES Auto Provisioning
button in the phone interface or the web interface. DES=2 is the default option.
Installing and Administering Avaya Conference Phone B199
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