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Before connecting to a network the IMG 2020 must be synchronized to a T1/E1 timing source such as a T1 or E1 span. Up to six separate clock sources can be connected/configured to various inputs on the rear of the unit. The Timing Synchronization Priority object defines the priority that the IMG 2020 will use when selecting the clock source. Once the timing sources are connected, the Timing Synchronization Priority List is used to determine which source gets the highest priority, 2nd highest priority, and so forth to lowest priority. To create the Timing Synchronization Priority List, right click on the IMG 2020 object and select New Timing Synchronization Priority List. Below is an explanation of each of the timing references and how they are used. The priority can be changed at any time as described below.

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