When making an international call, there are two prefixes required to the number you would normally call to ensure it connects successfully:
Exit Code
This is the code at the start of the number that tells the network that you wish to call someone outside of the country you are currently located in. In the majority of countries, this code can be substituted by dialing '+'. In scenarios where this does not work, there is a 2, 3 or 4 digit code that must be used and this differs from country to country. The two most common codes are '00' and '011'.
The exit code is sometimes referred to as the International Access Code or the International Direct Dialing (IDD) code.
Country Code
This code identifies the home country of the number that you are calling. If you are calling a mobile number, it is that mobile subscriber's home country regardless of where they are currently located in the world.
Examples
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If I am in the UK and want to ring someone in the US, I would dial, +1 or 001 {Phone Number}
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If I am in Germany and want to ring someone in Hong Kong, I would dial, +852 or 00 852 {Phone Number}
Callback Method
In a small number of countries, some network providers block our customers from making outbound calls. The callback method is used to resolve this, to know more, please click here.
