Understanding the International Dialing Plan
The International Dialing Plan (IDP) is a system that allows people to make telephone calls to other countries. It is a set of rules and regulations that are used by all of the world’s telephone companies. The IDP is based on the E.164 standard, which was developed by the International Telecommunication Union (ITU).
The IDP is made up of three main parts:
- Country codes: These are the first few digits of a telephone number. They tell the telephone network which country the call is going to.
- National destination codes: These are the next few digits of a telephone number. They tell the telephone network which part of the country the call is going to.
- Subscriber numbers: These are the last few digits of a telephone number. They tell the telephone network which specific telephone the call is going to.
To make an international call, you need to dial the following:
- International access code: This is the code that you need to dial to access the international telephone network. It is usually 00 or 011.
- Country code: This is the code for the country that you are calling.
- National destination code: This is the code for the part of the country that you are calling.
- Subscriber number: This is the telephone number of the person you are calling.
For example, to call a telephone number in the United States from the United Kingdom, you would dial 00 1 + area code + telephone number.
2. How to Find Country Codes
There are a few different ways to find country codes. You Industry Email List can look them up in a telephone directory, online, or on your mobile phone.
- Telephone directories:
- Most telephone directories have a section that Europe Cell Phone Number Resource lists country codes.
- Online: There are many websites that list country codes.
- Mobile phones: Many mobile phones have a built-in feature that allows you to look up country codes.
3. Tips for Making International Calls
Here are a few tips for making international calls:
- Make sure you have the correct telephone number. This is especially important when calling a mobile phone number.
- Be aware of the time difference. If you are calling someone in a different time zone, make sure you call them at a time when they are likely to be awake.
- Consider the cost of the call. International calls can be expensive. If you are on a budget, you may want to consider using a VoIP service or a calling card.
- Be patient. It may take a few minutes for your call to connect.
Conclusion
The International Dialing Plan is a complex system, but it is relatively easy to use. By following the tips in this blog post, you can make international calls without any problems.
