IP phones can directly access the custom files that you upload on the Utility Server
Procedure
Depending on the protocol you are using to access files, use one of the following URLs:
To access custom files using the HTTP protocol, use the <IP or FQDN>:80/custom/<file_name> URL. In the URL, <IP or FQDN> can be one of the following:
Avaya Aura® Device Services server IP address
Utility Server virtual IP address
Avaya Aura® Device Services server FQDN
Utility Server virtual FQDN
To access custom files using the HTTPS protocol, use the <virtual IP or FQDN>:1543/custom/<file_name> URL. In the URL, <virtual IP or FQDN> can be one of the following: