Default [Q] Proxicast Pocketport 2 Modem Bridge

I'm trying to configure a Proxicast PocketPort 2 Modem Bridge to work as a NAT router which will plug directly into the WAN port of my router. The PocketPort 2 is set by default to ttyUSB1 and I can configure that to anything I want. The PocketPort 2 is complaining with "Failed to open /dev/ttyUSB: No such device".

Question:, What command can I use in Cynogenmod's terminal to find out which ttyXXX is set for the Phone's usb port?