If a fractional PRI of less than 23 channels is desired, the H.323 protocol is recommended. MGCP support Q.SiG features in Call Manager 4.x, while H.323 did not. Cisco Unified Communications Manager ...
Earlier this month, the National Infrastructure Security Coordination Centre in the U.K. advised that implementations of the H.323 protocol are vulnerable to denial-of-service attacks and could even ...
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