TrainingCity delivers advanced technology training classes to many of the world's leading IT product vendors, carriers and service providers.Our VoIP & advanced SIP training classes are available as onsite instructor led classes taught by industry leading experts with years of design engineering experience.TrainingCity's new VoIP Security class offers attendees the opportunity to gain real world, hands on experience with the latest VoIP security technologies and standards.We also license courseware & "train the trainer" services for complete turn key training for large clients.