Hello list. Looking around I can't seem to find answers to what I am after, so here goes: I have an NEC Xen Master system (3 unit) basically maxed out. I want to connect a spare E1 card to the back of an existing Asterisk system terminating on a TE212P so I can divert out VOIP calls and eventually migrate over to Asterisk using the NEC system for handling the existing digital handsets only. So two questions: 1) Has anyone got any experience in connecting up this type of NEC system to a TE212 to route calls from the NEC system TO the Asterisk box? Any feedback / gotchas? 2) In this scenario, is the echo canceller needed? Or do I only really need it if I plan to route the call traffic out into another E1 circuit and to a telco? Thanks. Mikel