Dual OPX Interface Card (FXO Station and FXO CO side)

The OPX interface card is available in two variations:

• The Quad card isolates up to four lines using a single fiber link.
• The Dual card can isolate up to two lines using a single fiber link.

The CO side used an FXS interface card. It is powered from an express pair, or from a power source at the CO side (a jumper setting is required for this option). The card interfaces with the CO and provides an off-hook circuit, line polarity detection, ring detection, and battery disconnect detection.

The Station side uses an FXO interface card. This card is powered from the backplane supply of -48 Vdc. It provides battery feed with polarity reversal, ringing, and battery disconnect to the station side equipment.

Applications:

• Off premises loop start telephone
• Off premises fax/modem up to 56.6 kb/s
• Automatic ring down
• Calling Number Delivery (CND) compatible
• Calling Number Delivery on call Waiting (CNDW) compatible
• Call waiting compatible
• Open Switching Interval (OSI) compatible (brief battery disconnect)
• Battery reversal compatible

Features

• Local powered
• Available as a multi-mode or single-mode card
• Available with SC or ST connectors