Cisco 7912G SIP and Dierectories Services

Does anybody have any experience on XML services with this phone???
I have set up DirectoriesUrl and ServicesUrl pointing accordingly, but seems like phone not trying to access it. My firmware is 8.0.1 (CP7912080001SIP060412A)
Just 10 Speed Dials is a bit funny for such a phone, I need to configure external Directory Services.
Is it a good idea to revert to SCCP firmware to get XML services working???
thanks in advance


Asterisk 1.4 + cisco 7912G phones…