Multi-Tech Systems MULTIVOIP MVP-410ST/810ST - Manual (Page 101)

MultiVOIP User Guide Mechanical Installation & Cabling
101
4. Terminal Mode . When a voip ISDN connector is to be connected to a
PBX extension line or to a telco line, select “Terminal” as the
“Layer 1 Interface” in the ISDN Parameters screen. When making
cable connections, an NT1 device will be needed between the
MultiVOIP and the PSTN or between the MultiVOIP and any PBX
with a “U” interface. (For more information, see Appendix B: Cable
Pinouts in this manual.) Connect cables between voip ISDN
connectors and network equipment.
NOTE : In order to operate in Terminal mode, the
network equipment to which you will be
connecting (e.g., PBX) must support D-channel
signaling in its ISDN-S/T interface.