I'm joining a conference call with the army tonight, and would prefer to do it from my mobile because it has speakerphone. I've been told it's a free call, but I'm not sure if this means it's free for mobiles or just landlines. I'm hoping someone can tell me from the phone number. However, I'm not sure if it's classified information or not, so I can only offer part of the number :/ There's also a pin, but I'm guessing that's immaterial to this query. The number is 08***3.

Thanks.