The pace at which we need to work may well mean that on occasion we have little option but to qualify our candidates over the phone.  Please bear in mind that when we do this, we miss out on lots of information that we could easily pick up in a face to face meeting.  Over the phone we can only get limited information about their appearance, non-verbal communication and even their personality whereas face to face you’ll establish this more accurately.  Even if a face to face meeting is logistically impossible look to other options such as Skype or Facetime where appropriate and if this is out of the question look at other research tools such as LinkedIn or social media to get a better idea of your candidates.