[rescue] Cisco 837 power supply question

[Peter Porter]

Thanks for all the input,.  I was only able to respond to a few people, 
but I appreciated all the responses.

I ended up picking up a Cisco 837 which will hopefully do the trick  I 
don't have the official power supply, but I have a power supply that can 
provide 18vdc.  Does anyone know if the 837 has a positive or negative 
center polarity?  Incidentally, if anyone has an extra power supply for 
one of these I'd  be happy to send some money!

-Peter