I got accustomed to scheduling a proper time slot when a recruiter wants to have an initial phone interview to discuss a job position or my application. That way I can make sure I have the precise state of mind regarding the position, the company, and my relevant concerns during the conversation, especially when I need to emphasize my important skills and expertise related to the position.
But, I had a few cases when a recruiter called my number and started to dig into my background right off the bat. Even though they mention the title of the position, but I cannot remember all the important details of the job description, especially when I am deeply involved in doing something else right before having the phone call.
So, would it be appropriate to ask for scheduling a more convenient time to have this conversation? or professionally is it expected for the applicants to receive ad-hoc phone calls regarding their applications?