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7.ip_phone:features_and_configurations:how_to_upgrade_extension_module [2019/01/23 16:32]
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-====== How to upgrade EM53/EM63 in IP Phone ====== 
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-<fs medium><​ff sans-serif>​Several expansion modules can be chained together to connect to a IP phone which has Ext ports, so that all configurations of the expansion mdules should be done in the IP Phone.</​ff></​fs>​ 
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-Upgrade 
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-<fs medium><​ff sans-serif>​1.In the Iphone website, go to the path Phone->​Ext Key.</​ff></​fs>​ \\ 
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-<fs medium><​ff sans-serif>​2.To select an upgrade rom file from local side, then press Submit to access the upgrading.</​ff></​fs>​ 
-{{ :​7.ip_phone:​features_and_configurations:​ex1.png?​nolink |}} 
-<fs medium><​ff sans-serif>​3. The IP phone shows "​Upgrading"​. </​ff></​fs>​ \\ 
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-<fs medium><​ff sans-serif>​4.When the IP phone prompt "​please connect Expansion.."​then connect the expansin ​ module to the ip phone. \\ 
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-5.The "​Upgrade count" in the screen will be added one by one if one expansion module upgrading is finish. \\ 
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-6.After upgrading , remove the expansion module.\\ 
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-7.Press **Reboot** in the IP phone to exit the upgrading mode</​ff>​.</​fs>​ 
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-<​note>​if you need to upgrade multiple expansion devices , you can continue to connect the expansion with the IP Phone after the previous expansion is finished.</​note> ​