Yes, in many cases GA Connector can send information about Salesforce Leads/Contacts/etc created by call tracking software.
However, GA Connector requires the call tracking software to send GA Client ID to Salesforce in order for it to be able to send data to Google Analytics.
Not all call tracking apps match this requirements. Here are some examples that support this:
- CallTrackingMetrics
- Ringostat
- CallRail