I have a non PRI point to point T1 across the state. An 8700 on one end and Inter-Tel on the other. It is fixed so that a DS1FD port rings across to a T1 loop start trunk port. I have ADTRAN TSU 120's on both ends because I break out ports on the T1 for radio transmissions. The PTP has slips all day long, which of course causes calls to drop. What should be my master timing reference?
TIA
TIA