4508T4 Converged Network Appliance Installation Guide
4
• Analog Voice
Contains a mixture of FXS and FXO ports based on the model selected. The FXO ports
can be connected to PSTN for failover condition.
• Security
A stateful packet inspection firewall is used in combination with a voice over IP (VoIP)
application layer gateway to provide comprehensive “media-aware” security. The 4500 also
supports IPSec for secure site-to-site networking.
• VoIP
The 4500 resolves NAT/FW traversal problems for SIP, MGCP and H.323 traffic. It allows
a single public IP address to be used for multiple VoIP clients. VoIP survivability is also
provided so that local SIP PSTN gateways are available for inbound and outbound calling
during WAN link failures.
• Quality of Service
The 4500 maximizes WAN link utilization while optimizing voice quality using prioritization
and shaping.
• Call Quality Monitoring
The 4500 provides passive call quality monitoring statistics for each VoIP call to enforce
SLAs and resolve networking problems that negatively affect call quality.
• Future-proof Scalability
The 4500 is a powerful, flexible platform that can be deployed initially as a low-cost WAN
access router and then licensed through software for more advanced VoIP features and
increased call performance. It is the ideal platform for service providers offering DIA,
hosted VoIP and managed security services or enterprises migrating to converged voice
and data networks.
The following models are available in 4500 Series Converged Networking Router:
Model T1 Ports FXS Ports FXO Ports Wireless
4500T4 4 0 0 No
4508T4 4 6 2 No
4508T4W 4 6 2 Yes
4562T4W 4 2 6 Yes
4508E 0 8 0 No
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