Alcatel-Lucent ALE M3 Administrator's Manual page 187

Example:
<setting value="true" id=" SettingCustomSoftkeyEnable " override="true"/>
<setting value="http://10.11.5.140/Talking.xml" id="SettingCustomSoftkeyTalkingUrl " override="true"/>
The states that the XML file contains: Conversation; Hold; Held; Conf; ConfHold; BeTrans; Paging; Listening
After provisioning, you can use the enabled soft keys during a call.
ALE M3-M5-M7-M8 DeskPhones Administrator Guide 187