What is ENUM?

From Voxalot FAQ

Telephone Electronic Numbering (ENUM) is an easy way for you to 'tell the world' that you have VoIP and that everyone should call you for free via the internet rather than paying money to call you over the PSTN network.

Anyone that has a VoIP telephone service can register their regular PSTN telephone number into a ENUM database with an organisation such as www.e164.org. After the number has been registered, any person with a correctly configured VoIP service will be able to dial the normal PSTN phone number from their VoIP service and automatically have the call re-routed via the Internet for free, without using the PSTN network at all. The caller doesn't need to know that the callee has VoIP, nor do they need to know which VSP the callee is using. The fact that the callee has taken the time to register their PSTN number with ENUM means that any caller using correctly configured VoIP will get the call for free. For this reason, if you have a PSTN phone number and a VoIP service you should register for ENUM at www.e164.org.

Voxalot provides seamless ENUM lookup by using SIP Broker's ENUM Lookup so you can get the benefits without the effort. To leverage this you should route all your calls to VoXaLot. Voxalot can then check all your calls to see if there is a free way to connect. If there is a free way to connect your call, VoxaLot will find it for you. If there is no free way to connect your call, VoxaLot will route your call to your prefered VSP based on your VoxaLot Smart Calls (dial plans).

To send all your calls to Voxalot from your ATA, you should either register your ATA with Voxalot or send your calls to Voxalot using a Gateway. Details on setting up your hardware to use Voxalot are provided in our Tutorials.

For more details on how to set up ENUM routing you should review the VoXaLot Dial Plans tutorial.