Independent Lab Test Report: Security of Cisco CallManager-based IP Telephony against Malicious Hacker Attacks
Cisco Systems becomes the first, and to date the only, IP-Telephony vendor to earn Miercom's highest rating of Secure for its proven ability to defend an IP phone system against malicious attack. An expert team of hackers, assembled and supervised by Miercom, could not disrupt, or even disturb, phone service or features after three round-the-clock days of sophisticated attacks.