Who does not know the N720:
To operate at least one N720 IP DECT base and once the DECT Manager 720 DM is needed.
If you want to operate only one base - N510 IP from the Pro series.
The system is not so easy to take into operation. One should to have some experience.
I have only taken back in January a system in operation that did not get to work clean the selling dealer.
Important is the sync to make the shortest possible chains, maintain a minimum distance and even urgent to keep the frame quality in mind.
The system also supports clustering in which groups of base stations do not need to see, even just ONE DM is necessary, and not a per cluster.
If that's all too much technology is: the N510 IP PRO unetrstützt 4 calls and 6 handsets and often enough.