Nortel VoIP Gateway, Configuration Manual

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Network assessment 25
Norstar VoIP Gateway Configuration Guide
Network devices
The following table contains questions about devices on the network such as firewalls, NAT
devices, and DHCP servers.
• If the network uses public IP addresses, complete 2.c.
• If the network uses private IP addresses, complete 2.d. to 2.e.
Table 2 Network device checklist
Network assessment
The following table of questions are meant to ensure that the network is capable of handling IP
telephony, and that existing network services are not adversely affected.
Table 3 Network assessment
Prerequisites Yes No
2.a Is the network using DHCP?
2.b Is the network using private IP addresses?
2.c Do you have a public IP addresses for the Norstar VoIP Gateway?
2.d Does the system have a firewall/NAT device?
2.e A hub-based core will not have suitable performance for IP Telephony. Does the network
use a non-hub solution at its core?
Prerequisites Yes No
3.a Has a network assessment been completed?
3.b Has the number of switch/hub ports available and used in the LAN infrastructure been
calculated?
3.c Does the switch use VLANs? If so, get the VLAN port number and ID.
3.d Have the used and available IP addresses for each LAN segment been calculated?
3.e Has DHCP usage and location been recorded?
3.f Has the speed and configuration of the LAN been calculated?
3.g Has the estimated latency values between network locations been calculated?
3.h Have the Bandwidth/CIR utilization values for all WAN links been calculated?
3.i Has the quality of service availability on the network been calculated?