The access protocol is the interface used to access mailbox data. Normally, you add IMAPI, IMAP4, and LDAP. You would add FAX, only if your system supports FAX. The choices are as follows:
- LDAP This protocol is necessary to retrieve subscriber data.
- IMAP4 This protocol is necessary for the MAS to access the Avaya MSS.
- IMAPI This protocol is necessary for the MM Mailbox Monitor service to access the message store. Mailbox Monitor manages the Message Waiting Indicator and Call Me servers.
- FAX This protocol is necessary for the server to act as the FAX server.