Settings/sip cancel reasons to ignore missed call/VALIDVALUE

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Space separated list of reasons. Each reason starts with either text=, cause= or cause< followed by the value that would be in the sip-cancel-message. If the text-reason-value contains spaces, it must be quoted (see default value as example).
There is one proprietary text-reason-value which we use when an incoming call changes it's caller via re-invite with replaces header:
->text='Call was replaced'
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