Explanation
To provide the customized music, prompts, and/or error announcements when using the Avaya Call Park and Page snap-in, you need to use the Avaya Aura® Media Server (MS). The Media Server is an application that provides media processing services for voice and video calls, such as playing announcements, music on hold, conferencing, transcoding, and recording. The Media Server can be integrated with the Call Park and Page snap-in on the Avaya Breeze® platform, using SIP trunks and media resources. You can upload your own audio files to the Media Server and configure them as custom announcements for the Call Park and Page snap-in34

Explanation
To enable downloading the Personal Profile Manager (PPM) data to an Advanced SIP Telephone (AST), you need to configure two configuration screens in the Avaya Session Border Controller for Enterprise (ASBCE):
Reverse Proxy and File Transfer. PPM is a feature that allows ASTs to download configuration data from an Avaya Aura® Device Services (AADS) server or an HTTP server in the enterprise network. The configuration data includes settings such as firmware versions, network parameters, feature options, and user preferences.
The ASBCE server acts as a proxy for the ASTs and enables secure access to the internal servers that host the configuration data. To configure this feature in the ASBCE server, you need to use these two configuration screens:
* Reverse Proxy: This is a configuration object that enables secure access to internal web servers from external clients. The Reverse Proxy intercepts HTTP or HTTPS requests from external clients and forwards them to the appropriate internal web servers, such as an AADS server or an HTTP server. The Reverse Proxy also returns the responses from the internal web servers to the external clients. You need to configure a Reverse Proxy that maps the external URL of the PPM data to the internal URL of the PPM data on the AADS server or HTTP server.
* File Transfer: This is a configuration object that enables secure file transfer between external clients and internal servers using protocols such as FTP or SCP. The File Transfer intercepts file transfer requests from external clients and forwards them to the appropriate internal servers, such as an AADS server or an HTTP server. The File Transfer also returns the files from the internal servers to the external clients.
You need to configure a File Transfer that specifies parameters such as source and destination IP addresses, ports, protocols, usernames, passwords, encryption modes, and file paths for transferring PPM data files between ASTs and AADS servers or HTTP servers.

Explanation
The Avaya Session Border Controller for Enterprise (ASBCE) requires licenses to support different types of services, such as SIP Trunking or Remote Worker. The ASBCE licenses are based on the number of concurrent sessions that are handled by the ASBCE server. There are two types of licenses: standard services licenses and advanced services licenses. A standard services license is required for each SIP Trunking session, which is a session between the ASBCE server and a SIP service provider. An advanced services license is required for each Remote Worker session, which is a session between the ASBCE server and a remote endpoint, such as an IP phone or a softphone. Therefore, if the customer plans to have 50 SIP Trunks and100 Remote Workers supported by the ASBCE, they will need 50 standard services licenses and 100 advanced services licenses.