Configuring the V2IU 4350
• NAT/PAT translation for IP phones and PC’s. This allows a single public IP address to be used on the WAN link to represent all of the private IP addresses assigned to the LAN IP phones and PC’s.
• Static NAT entries. This enables the customer to use a WAN public IP address for data servers (web, mail, ftp, etc.) connected behind the 4350. These servers can then be configured with private IP addresses for additional security.
• A “VoIP” aware firewall. A full Layer 7 gateway for voice traffic and a stateful packet inspection firewall for data traffic.
• Call Admission Control (CAC). CAC uses a deterministic algorithm to decide when there are insufficient network resources available to adequately support new calls and then return the equivalent of a “fast busy” to new call requests.
• DHCP server and TFTP relay. These features are used to simplify and expedite the IP configuration of phones and PC’s. This also includes VoIP signaling gateway information (MGCP, SIP, and H.323.
• Call quality monitoring (using MOS, jitter, latency, packet loss and much more) and test tools.
Configuration Outline
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| Configure For IP Centrex |
Task | Subtask | Application? |
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System Configuration | configure LAN/WAN interface | Yes |
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| set ethernet link rate | Optional |
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| enable the DHCP server | Optional but recommended |
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| configure SNMP | Optional |
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VoIP Configuration | enable the VoIP ALG | Yes |
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| configure a VoIP subnet route | Optional |
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Data Networking Configuration | dynamic NAT | Optional but recommended |
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| static NAT | Optional |
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| static IP routing | Optional |
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Firewall Configuration | enable the data firewall | Yes |
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| configure basic settings | Optional |
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| configure advanced settings | Optional |
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Traffic Management | enable traffic shaping | Yes |
Configuration |
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