Avaya J100 - Page 32

Installing the phone by using DES eliminates the need for manual configuration of a provisioning
server. Device Enrollment Service is available at des.avaya.com.
The DES phone interface
The phone which supports DES comes from the factory with a unique device certificate that is
known to the DES server. The phone’s firmware includes a list of trusted root certificates of well-
known public certificate authorities. The phone is programmed with the identity of the DES service,
des.avaya.com.
Installing the phone using the DES server
During initial boot-up, the phone prompts the user to select if he wants to contact the DES server.
The Do you want to activate Auto Provisioning now notification is displayed on the
phone.
The user has 60 seconds to select Yes or No options or the timeout will be activated.
The following options are available:
• Yes: This option indicates that the phone should use only DES for server discovery instead of
a local network.
If the phone can contact DES and is able to obtain the configuration server URL, it will
contact the configuration server to get the settings. If the phone fails to contact the
configuration server, it will prompt the user to enter the configuration server information
manually.
If the phone can contact DES, but there is no configuration server assigned to the phone on
DES, it will prompt the user to enter the enrollment code.
When the user enters the enrollment code, the phone will contact DES again to obtain data
on its configuration server and will contact the configuration server for downloading the
settings.
The user can cancel the operation of entering the enrollment code. In this case, he will be
prompted to enter the configuration server manually.
• No: This option indicates that the phone should not use DES and should discover the
configuration server using the existing mechanism based on DHCP option 242. If the phone
fails to discover the configuration server using DHCP option 242, it will prompt the user to
enter a configuration server manually.
• Timeout: After the interval of 60 seconds, if no option is selected, the phone will use the
existing mechanism based on DHCP option 242. If the phone fails to discover the
configuration server in this case, it will contact DES to get the configuration server URL.
The following diagram shows the flow of DES discovery procedure:
Phone installation
December 2018 Installing and Administering Avaya J100 Series IP Phones 32
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