I think my quasi-static IP address was changed by Verizon. First, does the older Acemanager software work with RV50? If so, can I use 'SMS' option and its phone number to connect and verify the actual IP address?
Newer Sierra Wireless modems like the RV50 do not work with the stand alone Acemanager software. You have to use the web page interface wither remotely or locally.
Ok, but can you access a modem through its phone number? I think you need the IP to use the web-browser.
The only access to settings on the RV50 is over IP.