This is more like a network problem. Where are you trying to acess the phone from? Can you ping the ip address of the phone from the pc? Is there a firewall ?
there is no network problem,i can ping phone ip address from the pc ,there is no firewall between pc and cucm and phone,is there any service that should be enabled ?
What call manager version are you using? If you're on 8.x there is security by default and if you're on an older version it's possible you have security enabled (CTL files) which would be causing your phone not to trust it's TFTP configuration file, which is where the web access setting is passed to the phone. If you look at Settings > Status Messages on the phone do you see anything such as trust list update failed? If you see that it's likely an ITL file issue. If you go into Settings > Security, and delete the ITL from the phone it will download a new one automatically from your TFTP server. Once the ITL is correct the phone should trust the TFTP configuration file and update the web access setting on the phone.
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