No. The use of 9-1-1 as an emergency number was in use long
before the September 11, 2001 attack on the U.S. Allegedly, the
terrorists specifically chose the date of 9/11 because of its
correlation to the emergency number.
(note: see related links and the discussion page in reference to
debunking hoaxes pertaining to numerology in connection with the
9/11 attack)