Cisco IP phone 7940 series

[#1]

Hi I'm looking for help on how to get my cisco phone working, to use the plus net 250 minute allowance.
I have connected up the phone but the display states "unprovisioned" any advice/help much appreciated.
Dave

[#2]

No direct experience of that phone but just had a google around for info that might be useful for you.
Take a look here:- http://www.cisco.com/en/US/products/sw/voicesw/ps2156/products_administration_guide_chapter09186a008...
and here http://www.cisco.com/warp/public/788/voip/handset_to_sip.html#intro
if it needs converting from SCCP to SIP first.
Where you need to enter 'authentication name' use your Plustalk SIP ID and for authentication password' your Plustalk password.
I'm afraid from the documents it looks quite complicated to set it up so good luck.