CALL VERIFICATION
Abstract
Before moving to the call verification, you have to be sure to have access to our databases
Recommended order for call verification
Databases processing order
Internal whitelisting
katia databases
internal spam databases
Other vendors databases
Call verification field
We recommend to perform the check on the field representing the A_NUMBER
Caller CLIP
Presentation number
SIP FROM
We do not recommend to perform the check on the SIP_PAI field
The SIP_PAI field is often misconfigured : caller set a valid A_NUMBER but incorrect SIP_PAI value
Using it for call verification may increase the rate of False Positive.