[asterisk-users] Cisco SIP 8.5 and 9.0 Issues

[Gerard]

Hi list,
I was wondering if anyone had any solution to either one of two issues 
I'm having:
I have a cisco 7962G with the latest (from cisco) 8.5(4) SIP Firmware, 
it works very well for the most part, but after less then a week of 
heavy usage, eventually the phone gets into a state where it won't 
accept or let you place any more calls, the screen flashes "no free 
lines available" or something along those lines. (power cycle fixes this).
So my preferred solution would be to upgrade to the v9.0(3) firmware, 
but when that's loaded, the phone won't register with Asterisk anymore, 
does anyone know if I need to adjust my .cnf.xml file, or is it a bug of 
some sort?
Thanks for any input,
-- 
Gerard Saraber
Network Admin.
Rarcoa, Inc