I was able to connect using a Hologram SIM purpose-built for iot. The trick is to go in through https://eu.airvantage.net/accounts/signup?type=AVEP rather than the one I had used to register a MangOH with a SiWi SIM, which is https://eu.airvantage.net/session/login. I had to create a new, separate account with AirVantage (different company name, different email), respond to the confirmation email in order to create a password, etc. Finally in, via https://eu.airvantage.net/start I then see a new tab called Register. Choosing hardware of MangOH, I see the three questions (Serial Number, IMEI, Hardware name) (Enter FSN for the Serial Number). A choice is offered to “pre-configure” and I chose Yes, then in the follow-on question I only enabled it to “Set Heartbeat”. (Other options may be ok as well). The difference between this and the mangOH/SiWi SIM registration is that there is nowhere to enter a SIM ICCID, and that’s Ok. Then it was a matter of setting the APN on the Red (as described in the Getting Started Guide). AirVantage took some time doing steps “Configure Communication” and “Synchronize System”. After those were completed, I started the app redSensorToCloud and saw successful data transfers.
My support guy from Richardson (distributor) was very helpful and patient. According to him, if I want to swap out this Hologram SIM for a different Non-SiWi one, I should only have to change the APN, and no need to make changes to the AirVantage side. I will let you know how that goes.
Kudos to Sierra Wireless and the mangOH team for making this an unbundled system, so that we can be free to choose the provider that works best for us in our specific case.
That said, the support guy did make reference to some advantages to using the SiWi SIM, such as the ability to make changes on the fly and in one place after a lot of things have been deployed. I would like to learn more about that and other advantages to choosing Sierra Wireless as our access provider.