CCNA Voice 640 461 Video Training: Understanding VoIP Elements and Technology

http://www.ciscopress.com/store/ccna-voice-640-461-livelessons-video-training-9780789749833 This video is excerpted from CCNA Voice 640-461 … source

TechWiseTV: Inside the Technical Assistance Center: The TAC Experience

Register for the workshop: http://cs.co/9000BJ4zu. Originally released on September 25, 2014. Join the crew at TechWiseTV for a rare, behind-the-scenes look … source