Biztree is one of several websites that offers a phone log template. Biztree's form is available for free download in Word format. This template provides a space to list a caller's name and/or company, as well as phone number, the date and time of the call and other details.
Another site that provides phone log templates is Tidyform, which has options that are general as well as more specific to certain business types. Use the options to indicate whether you need follow-up, or use the extra space for notes. On the Excel Templates website, download a call log form designed particularly for tracking sales calls.