Product Description
Memotec Inc. 4-19
FXO Interface Cards
Ordering part numbers for the SDM-9220/9230:
•
161-1051-000 for the dual FXO interface card
•
161-1052-000 for the quad FXO interface card.
Ordering part numbers for the SDM-9120:
•
161-1351-000 for the dual FXO interface card
•
161-1352-000 for the quad FXO interface card.
The FXO interface card is a Telco/PTT interface that acts like a standard telephone set (a
two-wire telephone in a loop start circuit). This interface card:
• Provides a Subscriber Line connection to a Central Office or the station side of an
analog PBX
• Detects ring voltage, closes the loop during off-hook, and opens the loop in an
on-hook condition
• Generates pulse dial or DTMF tones
• Dual port interface with 2 RJ-11 female connectors for the dual FXO interface
card
• Quad port interface with 4 RJ-11 female connectors for the quad FXO interface
card
• Equipped with an onboard DSP processor.
• Up to 2 FXO interface cards can be installed in theSDM-9120 or SDM-9220, or 3
in the SDM-9230, providing up to 12 analog FXO voice ports in a single unit.
Figure 4-12: Dual FXO interface card (top), Quad FXO interface card (bottom)
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