Sounds like it's down now.
I noticed a short break for a while around noon also, but it's been busy again since about 1:00 p.m. on.
Part of the quiet may be because I'm noticing a few trends...
During the initial call on the MFD Dispatch channel, a Profile # and Talkgroup # are assigned.
EMS/more routine calls get assigned a higher Talkgroup #. Fire/more significant calls are assigned a lower Talkgroup #. I read in MCOEM talkgroup documentation that Profile 13 is for "high-rise incidents". I'm not sure what Profile 1-Profile 4 are intended for. Anyone else know? Profile 1 seems to be the most used. For most Profiles, only Talkgroup 2 is patched.
It also seems that some units report en-route/on-scene/etc. using their computers and only advise dispatch over the radio some of the time. For many EMS calls, I'll hear the initial call on Dispatch and then not much else until the unit hails Milwaukee County Paramedic Base on those channels.