/mcpaddresses are necessary when using Cisco ViewMail for Microsoft Outlook with the single inbox feature to send messages. When integrated with Exchange, Unity Connection allows touchtone and voice-recognition conversation users to hear the emails read to them when they sign in to Unity Connection using phone. The Text-to- Speech (TTS) playback is available provided that the text portion of the message does not exceed 1 MB in size and the text format of the message is supported by Unity Connection. Supported formats include plain text, quoted-printable text, HTML, and XML. To enable users to access email in Exchange, configure unified messaging and select the options applicable to text to speech. For more information, see Unified Messaging Guide for Cisco Unity Connection for Release 15 available at https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/15/unified_messaging/ guide/b_15cucumgx.html . Video Service Accounts Unity Connection allows the users to record and play video greetings using a video endpoint. Unity Connection facilitates you to record and play all types of following greetings as video: • Alternate • Busy • Internal • Closed • Standard • Holiday Error greetings are played only as audio greetings. Note Alternate Extensions In addition to the primary extension for each user, you can set up alternate extensions. Alternate extensions can be used for various reasons, such as handling multiple line appearances on user phones. Alternate extensions can also make calling Unity Connection from an alternate device, such as a mobile phone or a phone at another work site more convenient. When you specify the phone number or URI for an alternative extension, Unity Connection handles all calls from that number in the same way that it handles calls from a primary extension (assuming that ANI or caller ID is passed along to Unity Connection from the phone system). This means that Unity Connection associates the alternate phone number with the user account and when a call comes from that number, Unity Connection prompts the user to enter a PIN and sign in. If users set an alternate device to forward to Unity Connection, callers can hear the user greeting and leave messages for the user, just as they would when dialing the primary extension of the user. (Callers can also be transferred to the alternate extension for a user from the automated attendant.) Users need to set forwarding from the device itself, not in Unity Connection. Note that the phone number must be passed to Unity Connection for the system to recognize the device. Users can also address messages to an alternate extension that is associated with another user. System Administration Guide 298 User Settings Video Service Accounts