Hi
i have a router 1751 equipped only with a Vic-2bri-NT/TE; i will use only one interface (so only two voice channels, one BRI); have i to use one PVDM-256k-4 or two PVDM-256k-4 (or one PVDM-256k-8) if i use only two voice channels and not all four voice channels that are available?
thank you for your support