use Digi Connect EM with modem as gateway

Hello,

I have the digi connect em with an modem.
Now I can dial in with an notebook to the connect em and receive the sites on the module.
Is there any chance to receive sites from other moduls in the network?

An example:
the ppp interface has the IP 192.168.1.200.
the eth0 interface has 192.168.2.200 and an other modul has 192.168.2.201 connected over ethernet to the first modul with modem.
Now I want to dial in to the first module and then visit the homepage from the secound module.

I have the netos 7.1

thanks,
Frank