asterisk users - Jul 2006 - packet8 dta 310 power supply question

I just picked up a second hand packet8 dta310 model from a local
thrift shop.  It has no power supply with it.  It says it needs 12v
and 0.6a.  I have a spare power supplies that might fit this
description.

What polarity does this unit require? positive tip? negative tip?  If
you don't understand, reply with a closeup picture so I can read all
the text and symbols off the power adapter.

Thanks!


Scott