Is it possible to find IP dect phones with seamless roaming?

Question

Telephony

How to organize IP-telephony at a construction site?
We need a connection, they don’t want radios, they say we need phones. I'm not sure there are IP Dect phones that will automatically link to the nearest base. Do these even exist?
Right now there is Asterisk + Yealink W56H and you can hang a maximum of 4 handsets on their base and then you have to switch by hand, which is not an option. And we need street bases and so that if the phone within the range of this base itself clings to it. In short, seamless roaming as with WiFi.
Anyone messed with something like this?

Answer 1

Any enterprise-level dect-bases (read expensive) with their controller are able to handover.
Half of the household dect devices are able to work out this handover with a network of bases.
Of course, manufacturers of dect systems declare the compatibility of only their devices, and all options for checking the performance of "non-native" ones are at their own expense and at their own peril and risk ....
Offhand:
https://habr.com/ru/company/arttel/ blog/373601/

Answer 2

If IP, then it's easier to deploy WI-FI and put softphones on the buckets of workers.
Building a cellular connection on DECT is not humane for a wallet.