Introduction
Telephony Integration is a process that enables the communication between Cisco Unity Connection and the phone system, providing access to various features such as:
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Calls to a user extension that does not answer are forwarded to the personal greeting of the user.
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Messages left for a user activate the message waiting indicator (MWI) on the extension.
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A user has easy access to messages by pressing a button on the phone and entering a password.
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Calls to a user extension that is busy are forwarded to the busy greeting of the user.
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Unity Connection receives caller ID information from the phone system (if available).
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Unity Connection identifies the user who leaves a message during a forwarded internal call, based on the extension from which the call originated.
To know more about integrating Unity Connection with phone system, see the “Integrating Cisco Unity Connection with the Phone System” chapter of Design Guide for Cisco Unity Connection, Release 14, available at https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/14/design/guide/b_14cucdg.html.
After understanding how the Unity Connection integrates with a phone system, you need to configure and edit the settings for phone system, ports, port group, trunk, and security in Unity Connection.