I couldn't ID that immediately. Check
http://www.kb9ukd.com/digital/ for a list of what several digital modes sound like.
I agree with Dave, this is a paging system or perhaps a telemetry system, since the messages being sent are very short and infrequent. Knowing the frequency is a huge help, since that gives you a clue as to who is allowed to transmit there... Being heard on a scanner, I'm guessing it was in the 150-160 MHz range, which fits with paging.
I did a search on the morse ID you gave, but the
FCC has never heard of it, so it may be a station ID (check the timing - it's an ID if it comes just under every 10 minutes).
We can definitely find exactly what this is, with some additional info.