Need an advice on vADSL modems.

Hi, I'd like to ask for a little advice, or rather, a suggestion. Can anyone recommend a model of vADSL modem, that can support client-server communications? I need to set up a private connection over the phone line between two offices, meaning an client modem on one sie, and a server modem on the other side. I was originally planning to use the ZyXEL Prestige 841C / EE VDSL modem (server and client versions) but the thing is it looks like both versions are discontinued, and somehow I fail to find an alternative. Any help would be appreciated )