Is it possible to connect two ARIA SOHOs to one network via ethernet?

Question

Telephony

Hello, the question is as follows:
There are 2 offices with a mini-ATS LG-Nortel ARIA SOHO
Is it possible to connect them together so that they act as one corporate telephone network using ethernet?
I found an AR-LANU network card on the Internet with the following description:

Ethernet (LAN) interface for PBX AriaSOHO. It is installed in a special slot of the AR-BKSU base unit. Allows you to connect the PBX to the local data transmission network and carry out programming, removal of statistics, SMDR billing lines , etc.

The question is whether the organization of the connection between 2 mini-automatic telephone exchanges is included in the same " etc. " If not, then in principle whether these automatic telephone exchanges have such an opportunity or not.
Thanks

Answer 1

A cursory search showed that this is unlikely - the station is not able to connect not only to VoIP, but also to ISDN.
It remains only to look for an opportunity to connect an FXO / VoIP gateway to the station.