Is There a Way to Query a SIM7600's Connection Status?

I am trying to find a way to query a SIM7600 with regard to its network connection status.  There is an LED on the module that flashes at two different rates depending on (as I understand it) whether it is operating on 3g or 4g.  However, I don't see any AT commands that allow someone to query the part.  AT+CREG and AT+CGREG appear to be related to registration status, not connection status.

Thank you...