/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: mhelal https://cdn.slidesharecdn.com/profile-photo-mhelal-48x48.jpg?cb=1522822056 Since the 15th of March, 2004: Operation and Maintenance Manager then Technical Manager NTCC, National Telecommunication for Calling Cards NTCC works in the field of prepaid calling cards using the technology of the Intelligent Network for the control part and the NGN technology for the switching part. From the 1st of December 1998 until the 15th of March 2004: Switching Engineer Lucent Technologies, Egypt Branch (4 years at Lucent and 2 years at subcontractor) http://www.ntccegypt.com