CREATE TABLE PhoneButtonDataType
(
    Node BIGINT UNSIGNED DEFAULT NULL,
    Field VARCHAR(50) DEFAULT NULL,
    func VARCHAR(25) DEFAULT NULL,
    Button VARCHAR(50) DEFAULT NULL,
    Extension BIGINT UNSIGNED DEFAULT NULL,
    KEY ( Node,Field ),
    UNIQUE KEY ( Node,Field,Button )

) ENGINE=INNODB CHARSET=UTF8 COMMENT="Lock node for writing";
