Help Needed with Cisco 7912 Dialplan

Hi,

I've inherited a Cisco 7912 handset and am trying to set it up to work with a SIP account (Sipgate at the moment, but this may change).

I have the latest SIP firmware and have the handset registered and working for inbound calls, but cannot get reliable outbound calls. I think this is due to the dialplan configured on the phone. I have rest this to the default Cisco dialplan but this is no better.

Can anyone provide me with a copy of a working dial plan for UK based usage?

Thanks

m2048