There are some more things than Mobile Phones, Landline Phones and E Mails at your work place. Most Important thing is your collegues , subrdinates and Boss.If focus is work oriented and your personality reflects high professional attitude at work place there will be no distraction at work place.In every case you must be clear for purpose of the day.I felt that if we could plan properly with written documentation about our up coming activities, it helps us to avoid the distraction.