SMS notification - Bypass 160 character limit?

[Ignition 8.1.5]

I’m using an Airlink RV50x for SMS alarm notification. Looks like my messages get automatically split to stay under the 160 character limit of SMS. I know longer messages are possible, and a quick search tells me that’s because of SMS concatenation.

Is it possible to enable concatenation? I don’t see how this would happen on the Ignition side without a new configuration option, but perhaps it’s possible on the RV50x side?