usy signal */
        SSDE_NO_DIALTONE = 0x0400,
        SSDE_NO_ANSWER = 0x0500,
        SSDE_NO_CARRIER = 0x0600,
        SSDE_BLACKLISTED = 0x0700,      /* used in GSM network */
        SSDE_DELAYED = 0x0800,          /* used in GSM network */
        SSDE_CALL_FAILED = 0x0900, 						/* couldn't dial for some reason */
        SSDE_NEG_FAILED = 0x0a00,
        SSDE_AUTH_REFUSED = 0x0b00,
        SSDE_AUTH_FAILED = 0x0c00,
        SSDE_LQM_FAILURE = 0x0d00,
        SSDE_LOOPED_BACK = 0x0e00,
        SSDE