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Features of an IP phone
- Thread starter nd0627
- Start date
Yes - I had to look it up as I have never called it NDD or IDD (those seem to be old terms). I just call it National or Long Distance or International calling - anyway yes as long as you connect to a central office you can configure the PBX to make these calls. We have digital and IP and can call anywhere.
International Direct Dialing
The International Direct Dialing prefix is the international access code that is used when dialing a call from one listed country to another. This is followed by the country code for the country you are calling (see above). The International Direct Dialing codes are changed on regular basis in most of countries. Therefore, those countries have multiple International Direct Dialings. Each one of Dialings are regulated by different long-distance carriers.
National Direct Dialing
The National Direct Dialing prefix is used to make a call within that country from one city to another (it may also be necessary when calling another city in the same vicinity). The National Direct Dialing access code is followed by the city or area code for the place you are calling. The city or area codes can be viewed by following the link from the country name on the table below. Phone numbers are often written in this format: +1-(0)3546-XXXX-XXXX. This example shows the numbers used for both international and national long-distance calls. +1 indicates the country code, while (0) indicates the National Direct Dialing. If you are calling from another country, the National Direct Dialing does not need to be used after dialing the country code. On the other hand, when dialing from within that country, the National Direct Dialing would be used and the country code is not. Note: all city or area codes used on this site are expressed for use in international calling. If you are dialing a national call, prefix the area/city code with the National Direct Dialing.
International Direct Dialing
The International Direct Dialing prefix is the international access code that is used when dialing a call from one listed country to another. This is followed by the country code for the country you are calling (see above). The International Direct Dialing codes are changed on regular basis in most of countries. Therefore, those countries have multiple International Direct Dialings. Each one of Dialings are regulated by different long-distance carriers.
National Direct Dialing
The National Direct Dialing prefix is used to make a call within that country from one city to another (it may also be necessary when calling another city in the same vicinity). The National Direct Dialing access code is followed by the city or area code for the place you are calling. The city or area codes can be viewed by following the link from the country name on the table below. Phone numbers are often written in this format: +1-(0)3546-XXXX-XXXX. This example shows the numbers used for both international and national long-distance calls. +1 indicates the country code, while (0) indicates the National Direct Dialing. If you are calling from another country, the National Direct Dialing does not need to be used after dialing the country code. On the other hand, when dialing from within that country, the National Direct Dialing would be used and the country code is not. Note: all city or area codes used on this site are expressed for use in international calling. If you are dialing a national call, prefix the area/city code with the National Direct Dialing.
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