The Cisco IP Telephony Design Specialist certification was developed for those who design IP Telephony multi-service network solutions. Cisco IP Telephony Design Specialists can design a scalable, converged network using QOS, Cisco Call Manager clustering, H.323, MGCP, or SIP signaling protocols and assess the scope of work required to integrate legacy TDM PBXs and voice mail systems into an existing data network.
Valid CCDA certification
Cisco Specialist certifications are valid for two years. To recertify, take and pass the current version of the exam(s) or pass a current CCIE written exam.