About Single Inbox
Single inbox, one of the unified messaging features in Unity Connection, synchronizes voice messages in Unity Connection and Exchange mailboxes. When a user is enabled for single inbox, all Unity Connection voice messages that are sent to the user, including those sent from Cisco Unity Connection ViewMail for Microsoft Outlook, are first stored in Unity Connection and are immediately replicated to the user’s Exchange mailbox. In addition, status changes (for example, from unread to read), changes to the subject line, and changes to the priority are replicated from Unity Connection to Exchange and vice versa, as applicable. For a detailed explanation and configuration of single inbox functionality, see the “Configuring Unified Messaging” chapter in the Unified Messaging Guide for Cisco Unity Connection, Release 12.x, available at https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/12x/unified_messaging/b_12xcucumgx.html.
For Unity Connection system requirements for single inbox, see the “Unified Messaging Requirements: Synchronizing Unity Connection and Exchange Mailboxes” section of System Requirements for Cisco Unity Connection, Release 12.x, at http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/12x/requirements/b_12xcucsysreqs.html.
You can configure Connection to synchronize voice messages between Unity Connection mailboxes and the corresponding Office 365 mailboxes. When single inbox is enabled for a user, all voice messages, including those sent from Cisco ViewMail for Microsoft Outlook, are first stored in Connection and are immediately replicated to the Office 365 mailbox for the recipient. Voice messages appear in the Outlook inbox for the user alongside email and faxes, and also appear in the Connection mailbox for the user.
The synchronization of voice messages in Unity Connection and Exchange mailboxes (single inbox) supports both the IPv4 and IPv6 addresses. However, the IPv6 address works only when Unity Connection platform is configured in dual (IPv4/IPv6) mode.
Single Inbox over IPv6 is supported only for Office 365, Exchange 2013, Exchange 2016 and Exchange 2019.