... 64Kbit/s: Service interrupt error testing Bit code testing Pattern slip testing Signal loss AIS alarm ... : >1200Ω Unbalance bridging resistance: >750Ω.(10) Error code insertion: None, single, or ratio 10-1 ~ 10 ... check: odd, even, 1, 0, none(2.3) Error code insertion: None, single, or ratio 10-1 ~ 10 ... -7.(3) Receiver(3.1) SYNCH modeClock source: Internal ...