I dont get the CP-521 phone to register to my UC500. I have the 12.4.11-XW9 IOS and there is a .bin file which I have put as tftp-server, but what about the load statement under telephony-service, what should I specify as load for the 521 phone?
You have your service module IP address defined as your CME address. This is very wrong.
ip source-address 192.168.200.1 port 2000
ip dhcp pool IPT
option 150 ip 192.168.200.1