Hello everyone, I need to call a British company to ask them a few questions, and on their website they give a phone number with the mention "Ext 55", which should reach a French-speaking hotline - which I'd obviously prefer given that my questions are going to be quite technical and I sure am not confident enough to have a discussion over the phone for such topics. Would any of you happen to know what this "Ext 55" means ? Here's the exact context : And for those who'd be curious, the company is London Electronics Limited. Is it something like I must dial the number then add 55 once I have the line ? Or that I should replace the last two digits (44) by 55 ? Thank you very much for your answers !