Question:  I have two separate Encore Party-line systems in different buildings across town.  I would like to link them together via an ethernet connection, is this possible and if so what devices will allow me to accomplish this? 
Answer:  Yes it is possible to connect two separate Encore PL systems together via an ethernet connection, the Clear-Com products that you will need are our Voice 2 interfaces (setup as Client and Server) to make the internet connection to one another and our EF-701M 2-wire to 4-wire interfaces.  The EF-701s will convert the unbalanced party-line audio to line level balanced 4-wire audio which is easily processed by the Voice 2 interfaces.  One EF-701M / Voice 2 unit will be setup at each party-line site.  See the block diagram below, two detailed documents are attached below that describe specifically how to make the physical connections to each party-line system using Voice 2 and the EF-701M.