Remember what the guy said about memory in telco smartjack. 1 week/24 hr summarys. I used to work on the cable lines outside. A quick fix was to re-seat the T1 card. If it took too many errors its buffer would fill and start dropping.Some I was back the next day or week, and others never(bad telco line or bad seat in box) . If its the D all calls would drop. Do all active callers get dropped at once? As for incoming, If it is PRI you could have colliding B channels(busy or mis-directed calls). Your switch should be on DESEND, b8zs, and have the same number of B channels turned up as telco. They will be ACSEND.(handing out B's) Calls come in on 1 out on 23, unless 2 try at once to get 1 or 23. Otherwise report to serving telco- this number cannot call your number. You need example. and make trouble report to ask for un-intrusive monitor if established calls drop. I've seen bad repeaters too.
