USING MULTIPLE GIGASET BASE STATIONS

[johntimber]

Hi,

My current setup is a Gigaset SL565 base station with five SL56 handsets and a Siemens HC450 Door System. I want to add VOIP to my setup, so have bought a Gigaset N300IP base station. The intention was for the N300IP to replace the SL565 as a base station, but I've discovered that the N300IP is not compatible with the HC450 Door System. So....I'm left with the option of keeping BOTH base stations, and registering all of my handsets with both of them. The problem is that, as far as I can tell, each handset can only be connected to one base station at a time, meaning that an incoming call on one of the base stations will only be heard on whichever handset(s) happen to be connected to it at the time. Is there any way of having incoming calls from both base stations routed to all handsets, regardless of whether the handsets are connected to the relevant base station?

Please help.

I did not find the right solution from the Internet.

References:-
https://www.ukvoipforums.com/viewtopic.php?t=1215
Product Video Production Agency

Thanks!

[Bryannum]

How does the Snom system decide which M9 unit is base 1 and which unit is base 2?