This documentation describes the use of CDT, IP desk phones, multiterminal desktop     (MTD), and the external agent function.
                            The application offers a comprehensive range of functions related to enterprise     telephony and contact center operations.
                            The External Terminal Controller (ETC) module enables the use of IP desk phones in the       Sinch Contact Pro system in the same way as     Communication Desktop (CDT).
                            The external agent function allows you to accept queue calls and calls to your     extension number without being logged on to CDT.
                            Describes the configuration and use of the MTD function
                            