I think you mean SC/APC. It almost surely is single mode. OS2 should be fine. The other measurements probably don't matter as long as you get OS2 single mode with SC connectors with an APC polish on ...
I've been asked to help connect 2 sites via single mode, and were told that we have to use dwdm and were allocated a specific channel. I've only ever used the "normal" single- or multi-mode ...
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