4508T4 Converged Network Appliance Installation Guide
5
Feature Summary
VoIP
•
SIP, MGCP and H.323 Application Layer Gateway (ALG) that allows a single public IP
address to be used for multiple VoIP endpoints
•
VoIP survivability for local call switching to PSTN gateways during WAN link failures (SIP
only)
QoS
•
Class based queuing/prioritization
•
Diffserv marking and policing
•
Traffic shaping
•
VoIP Call Admission Control (CAC) prevents oversubscription of priority queue
Security
•
Stateful packet inspection firewall
•
VoIP aware firewall dynamically provisioning and closing of UDP ports used for VoIP calls
•
IPSec: 3DES, SHA-1
•
NAT/PAT server that hides enterprise LAN topology
Passive Call Quality Monitoring
•
Per call statistics that include Mean Opinion Score (MOS) (average and minimum), jitter,
latency, and packet loss
•
Alarms for poor MOS scores
•
Active call count indicators
