CVOICE 8.0 implementing Cisco Unified Communications Voice over IP and QoS v8.0 : study guide - Froehlich, Andrew G.; ebrary, Inc. (Indianapolis : Wiley Pub., Inc., 2011)
"Exam 642-437"--Cover.
Includes index.
Electronic reproduction.
Keywords: Internet telephony -- Examinations -- Study guides; Electronic data processing personnel -- Certification -- Study guides; Electronic books