20.1.2 UM Configuration—[1-2] Mailbox Settings—Full SettingMailbox ParametersMailbox NumberSpecifies the subscriber’s mailbox number. The maximum number of digits that can be used for mailboxnumbers is set in 24.4 UM Configuration—[5-4] System Parameters—Parameters—Mailbox— MailboxNo. Max. Length (3-8), or when you initialise the system.NoteThe mailbox number can only be set when adding a mailbox; when editing a mailbox, you cannot changethe assigned mailbox number.Value Range2–[the value set in Mailbox No. Max. Length (3-8)] digitsMaintenance Console Location20.1.2 UM Configuration—[1-2] Mailbox Settings—Full Setting—Mailbox ParametersPC Programming Manual References10.9 PBX Configuration—[2-9] System—System Options—Option 9Feature Guide References3.1.1 Unified Messaging System Overview3.2.2 Subscriber Features—3.2.2.20 MailboxExtensionSpecifies the extension number of the mailbox’s subscriber. Any valid extension number including an ExtensionGroup number can be assigned.NoteIf an Extension Group number is assigned to a mailbox, all group members are able to access themessages stored in the mailbox.Value Range2–8 digitsMaintenance Console Location20.1.2 UM Configuration—[1-2] Mailbox Settings—Full Setting—Mailbox ParametersPC Programming Manual References10.9 PBX Configuration—[2-9] System—System Options—Option 9Feature Guide References3.1.1 Unified Messaging System OverviewPC Programming Manual 86520.1.2 UM Configuration—[1-2] Mailbox Settings—Full Setting