You can upgrade Linux-based IP Office severs using the following methods:
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Upgrade Method
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Description
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Subscription Mode System Upgrade
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For subscription mode IP Office systems, you can schedule and perform upgrades remotely using Customer Operations Manager.
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Transferring an ISO file
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An ISO file transfer is performed using a number of methods. After the file transfer, use the IP Office Web Manager to perform a scheduled upgrade.
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Upgrading from a bootable USB
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Upgrade using a USB memory key. See Upgrading using a USB key. This can be an attended or automatic upgrade.
Note:
On Avaya Solutions Platform (ASP) 110 servers, specifically Dell R640 or R660, upgrading IP Office Release to 12.3 from any previous 12.x version using the USB method is not recommended. Instead, all upgrades to 12.3 releases must be performed through Web Manager using the IP Office file transfer (ISO) method.
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