If your device supports dual-SIM and you want to track calls from/to one SIM card only, you can set that up in the Salestrail app. Here are the steps:
Step 1: Go to the Settings in the Salestrail app > Call Settings > Track SIM Cards.
Step 2: Choose which SIM card you'd like to track calls or both.
Note: Each SIM card has a SIM account that consists of numbers and letters. Unfortunately, we cannot bring the phone number of the SIM cards to the app, however, there is the Slot number. To be sure, please choose each SIM respectively and make a few test calls.