The IP Office can auto-generate the avayab199_fw_version.xml file requested by B199 phones. By default, that file assumes a particular supported firmware release. For example, for IP Office R11.1.2.4, B199 firmware firmware-1.0.8.0.13-release.kt is assumed.
If required, using a NoUser source number you can set the B199 firmware version to a different value.
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In the IP Office configuration, locate the Source Number settings of the NoUser user.
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Add the source number SET_B199_FW_VER=nnnn where nnnn is the required B199 firmware version. The IP Office then uses firmware-nnnn-release.kt in its auto-generated avayab199_fw_version.xml file.
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Save the new configuration using a reboot.
