USE provisioning;

UPDATE voip_preferences SET description='SIP URI of another subscriber (typically a SIP trunk) for looking up registration. If non-empty, the calls will be routed to registered location of specified user. This means that registration of current user will be ignored for incoming calls and can be combined with e164_to_ruri preference for SIP trunking, thus allowing to reach subscriber/extension behind the SIP trunk. A valid value must begin with sip:'
WHERE attribute = 'location_from_subscriber';

DELETE FROM voip_preferences WHERE attribute = 'location_from_subscriber_mode';