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The System Trunk Interface eXtender (STIX) FXS module is an FXS interface card that supports up to eight FXS channels. Each port provides 2 REN (Ring Equivalence Number) channels per line.

The 8-channel FXS interface card is for the connection of on-premises analog telephony devices only. It shall not be connected to external exposed line plant and telecommunications networks.

STIX Faceplate Connector Locations

STI/PCI FXS RJ-11 Connector

STIX-8FXS/DSP Connector Pinouts


Pin Numbers

Line 1

4 and 3

Line 2

2 and 5

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