can i make use of this FXO gateway?

I don't have any PVDMs but I have this FXO gateway pictured below.
Can I use this thing to connect to the PSTN or simulate connections to the PSTN? I'm afraid this gateway is only useful for connecting analog phones to an IP PBX...
It would be nice if I could offload transcoding to the FXO gateway. I'm confusing myself!
Can I use this thing to connect to the PSTN or simulate connections to the PSTN? I'm afraid this gateway is only useful for connecting analog phones to an IP PBX...
It would be nice if I could offload transcoding to the FXO gateway. I'm confusing myself!
Climb a mountain, tell no one.
Comments
Curious how hard would it be? I know simply connecting an RJ-11 cable won't give me access to the PSTN. Might be fast work around towards a PSTN simulator when I can call my own cell or friends and dial 911 for real.
FXO is outside so to speak and that's what I too am curious about the complexity of the config.
CUCM SRND 9x/10, UCCX SRND 10x, QOS SRND, SIP Trunking Guide, anything contact center related
fxS=Station(connection to Station"fax, phone,modem")
CUCM SRND 9x/10, UCCX SRND 10x, QOS SRND, SIP Trunking Guide, anything contact center related