We had horrible problems with the 730L and our Verizon carrier.  We are using Z1 and Z3 merakis and have several sites running cell only connectivity.  We have many out there running on old Pantech modems, working great.  The 730L is listed as a compatible modem on the Cisco Meraki compatibility page, but that was not our experience.  Many network drops, often hours at a time...not good for production law enforcement connection.  We have to hunt and peck to find the ancient Pantech modems, and they work fine.     I opened a case with meraki support and went through several techs, and all were stumped.  And I think the 730L works ok for some areas and folk, but here they've been so sporadic it just is a no-go modem for us.  Hopefully the Z3C comes down in price and be a bit more viable for some site budgets. ... View more

That doesn't sound normal..   In my experience with the Z series anyway, the cell only connection should come up on its own after a reboot after you've introducted the LAN connection the first time when configuring.  I think that first configuration using LAN, then hooking up the Cell...sort of "training wheels" as it were.  This is even suggested as best practice in the Meraki notes for many of the cell modem connections.     We run many devices cell only for the same reasons you do, and I always try and set them up using that training wheels method.  Mostly it has been a success...however, newer modems have proved flaky, at least with our Verizon coverage.  We have to resort to buying old versions of the USB modems from Amazon and such in a pinch.   ... View more