Dynamic Call Tracking is a way to track the effectiveness of online advertising down to the keyword.
Each site visitor is assigned a unique phone number. When a phone call is made to this number, information about the source of the transition to the site is recorded for the caller.
Static call tracking is a way to track the effectiveness of advertising by assigning a separate phone number to each advertising channel.
Each advertising source (online and offline) is assigned a phone number. The number of calls determines the number of potential Clients brought by the advertising channel.