RIM :: Calling Codes Outside Home Country?

This might not be a Blackberry-specific issue, but I am posting here because I am using a Bold 9900 and it is happening to me. It actually happened on my Storm as well. My phone is unlocked and I am currently outside my home country. Whenever I call out, I can simply call with the number without adding the calling code, but when I am texting, I have to add the calling code as if I were in my home country before the text gets sent. Also, when I choose a contact in my phonebook, I do not have the calling code saved in the numbers, but for some weird reason, it adds it. Is this normal? Is there a way for me to turn it off?

[edit] A side note. I add the calling code as another field in the phone book. I add it as a home number so I can just text with that field instead of typing the entire number with the calling code. For some weird reason when I am getting an incoming call, the name is shown along with the number with the calling code.