I have a configuration problem with the R20B external intercom with a internal VP-R49G to which I have programmed cloud access on the first account and the interface to the VoIP PBX on the second, both regularly registered.
When I make the call, the smartphones and the internal intercom with the registered cloud account are contacted immediately, while the call to the intended VoIP extension is never made.
I searched the product documentation and all the web server programming entries, but I didn't find any method to set a form of priority or exclusion
with a time condition.
Make sure that the R20B is on the latest Akuvox firmware, once you've confirmed this on the call options, you'll want to use the extension number along with /1 or /2 for the SIP Account, if not already.