marcus varney,
Only the numbers owned by the Ministry of Interior will remain the same and have 7 digits (besides short codes like 999 etc.) for both fixed and mobile users, the first digit of every number will be repeated and contain 8 digits. The affected ranges starting with 3,4,5,6 and 7 and these are the ones that are owned by businesses and consumers. This is a fairly transparent process and we hope that the confusion is minimal.

Supreme Council of Information and Communication Technology (ictQATAR)
Website: http://www.ictqatar.qa
Blog: http://www.digitalqatar.qa