1800 free phone service allows users to make numerous free calls through a national unique number to different destinations. The call fee shall be charged to the 1800 service subscriber

For example:

Company A, which has three customer care centers in Hanoi, HCM city and Danang, registers a national unique number 1800 1234.

The company can have three different telephone numbers for Hanoi, HCM city and Danang centers, however, with 1800 free phone service, customers can contact only one number to connect to one of those centers. The network will automatically recognize the number and connect to the nearest center.


Benefits:
For service users:

• 1800 calls are always free of charge since they are charged to the service subscriber.
• Calls can be made anywhere nationwide just by dialing 1800.xxxxxx (without area code)

• To encourage customers to make calls to promotion center.
• To easily promote clients` products via a national unique number.
• Don’t have to change the existing telephone numbers.