Examples of Primary Extensions are detaiiled below:
Example 1:
Cordant Inc., headquartered in the US, is provided with the following consecutive number range for its carrier:
+1 555 8472 100 to +1 555 8472 199
Cordant uses a 3-digit
extension internally. Therefore, the number range contains the following
parts:
|
Country code |
+1 |
|
Area code |
555 |
|
Main number |
8472 |
|
Extension |
100 to 199 |
The carrier has informed Cordant that for outbound calls it will substitute any invalid calling party numbers with +1 555 8472 100.
100 is therefore the Primary Extension. Cordant uses Primary Extension 100 for its main reception and advertises the number as the company contact phone number.
Example 2:
Cordant Ltd. is based in London, UK and is provided with the following number range from its carrier:
+44 1632 96 1000 to +44 1632 96 2999
Cordant uses the last 4 digits as the extension. Therefore, the number range contains the following parts:
|
Country code |
+44 |
|
Area code |
1632 |
|
Main number |
96 |
|
Extension |
1000 to 2999 |
The carrier has informed Cordant that for outbound calls it will substitute any invalid calling party numbers with +44 1632 96 1000.
1000 is therefore the Primary Extension. Cordant uses Primary Extension 1000 for its main reception and advertises the number as the company contact phone number.
Example 3:
Cordant GmbH is based in Berlin, Germany and advertises the number as the company contact phone number.
+49 30 2555 5000 to +49 30 2555 9999
Cordant uses the last 4 digits as the extension. Therefore, the number range contains the following parts:
|
Country code |
+49 |
|
Area code |
30 |
|
Main number |
2555 |
|
Extension |
5000 to 9999 |
In addition to the extensions 5000…9999, the carrier has assigned extension 0 (zero) to Cordant, which will also be substituted for any invalid calling party numbers (for outbound calls).
0 is therefore the Primary Extension. Cordant uses +49 30 2555-0 for its main reception and advertises the number as the company contact phone number.