In general, we allocate one call tracking number for every 3,000 campaign impressions per month.
The ratio of one call tracking number to 3,000 impressions per month comes from the rate of query we use to pull impression data from AdWords, and relates to traffic levels. Essentially, 3,000 impressions per month equates to one impression every five minutes. With that level of traffic we can accurately match impression data to call data. If the traffic level is higher, we need to allocate additional numbers to maintain accurate matching, as described below:
- Where a campaign has more than 3000 impressions per month, we break down those impressions by Ad group, and allocate one call tracking number per Ad group.
- For any Ad group with more than 3000 impressions per month, we break down the Ad group impressions by keyword to get the number of impressions down to 3,000
- For e.g. if an ad group has three keywords with impressions of 2,000, 1,500 and 1,000 each, you might remove the two keywords with impressions of 1,000 and 1,500 each and create a new ad group for those two keywords and assign one number to that ad group. The remaining keyword with 2,000 impressions would stay within the original ad group.
- If a keyword has more than 3,000 impressions per month, then it’s necessary to have only one keyword within the relevant Ad group (with one call tracking number assigned to that keyword).
See table below for examples:
|Name of Campaign||Amount of Impressions||Amount of numbers required|
|Campaign 3||100||Can share the same number as Campaign 2|
Can share the same number as Campaign 2
|Campaign 5||600||Can share the same number as Campaign 2|
|Campaign 6||8000||Needs to be broken down to Adgroup|
Can share the same number as Campaign 7
|Campaign 6||3 numbers as follows:|
|AdGroup 2||2000||Can share the same number as AdGroup 1|
|AdGroup 4||2200||Can share the same number as AdGroup 3|