db-schema/db_scripts/base/5607.up

INSERT INTO provisioning.voip_preferences (attribute, type, usr_pref, dom_pref, peer_pref, data_type, max_occur, description, modify_timestamp) VALUES('force_to_pstn', 1, 1, 1, 1, 'boolean', 1, 'Force calls from this user/domain/peer to be routed to PSTN even if the callee is local. Use with caution, as this setting may increase your costs! When enabling this option in a peer, make sure you trust it, as the NGCP will become an open relay for it!', '1970-01-01 00:00:00');