International call progress tones for IP-PBX and VoIP telephony
PSTN Compliance Data
Welcome to our revamped World DAA Database, dedicated to the A-Z of global wireline compliance. From here you can check the parameters for a specific country or list the countries that match the selected parameters.
The term D.A.A. stands for Direct Access Arrangement, which is the isolating circuitry used to couple a telephone line to electronic equipment. Examples of such equipment are modems, VoIP gateways and PABXs.Please note that this service is experimental and that the dataset is provisional.