Integrate vTiger CRM to Vicidial

Hello All,
Recently we integrated vTiger CRM (latest version) to vicidial for a UK based client.
The task seems to be simple however there are few tricky points needs to be handle properly. For example, once we integrated vTiger with vicidial, we found that system adds “1″ as dial code before every phone number. We need to remove this default “1″ to let user call UK or any other country. After googling for some time and implementing try and error method we found concrete solution for “How to remove “1″ dial code from vicidial”
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