Requirements for Cisco Call Managers from Jack prabha's blog

Cisco Call Managers must have a Bachelor’s degree in a field such as Computer Science, Information Technology, Telecommunications or a related discipline. Some organizations also seek candidates with a Master’s degree, and knowledge of routers, switches, and other equipment. Prior work experience is an advantage.

The following certifications are also helpful:

Cisco Certified Network Professional Voice (CCNP Voice)

The Cisco Certified Network Professional Voice certification verifies the knowledge and skills necessary to integrate into underlying network architectures. It offers the individuals great expertise in operating, configuring, and troubleshooting a converged IP network.

Cisco Certified Network Professional (CCNP)

Cisco Certified Network Professional is a certification that is targeted at full-time network or system administrators. The professionals who want to pursue this course will be working with a local or wide area network (LAN/WAN) infrastructure.

Cisco Certified Internetwork Expert (CCIE)

This certification is for senior networking professionals who want to enhance their skills to design, build, implement, maintain and troubleshoot complex enterprise networking infrastructures.