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IP Telephony Configuration Guide
Chapter 2
Prerequisites checklist
Before you set up VoIP trunks or IP telephones on a Business Communications Manager,
complete the following checklists to ensure that the system is correctly set up. Some questions do
not apply to all installations.
This guide contains a number of appendices that explain various aspects of the system directly
related to IP telephony functions. However, refer to the Business Communications Manager
Programming Operations Guide for specific information about configuring the data portion of the
Business Communications Manager.
This section includes the following checklists:
• “Network diagram” on page 29
• “Network devices” on page 30
• “Network assessment” on page 30
• “Resource assessment” on page 31
• “Keycodes” on page 33
• “Business Communications Manager system configuration” on page 34
• “IP telephones” on page 37
Network diagram
To aid in installation, a Network Diagram is needed to provide a basic understanding of how the
network is configured. Before you install IP functionality, you must have a network diagram that
captures all of the information described in the following table. If you are configuring IP
telephones but not voice over IP (VoIP) trunks, you do not need to answer the last two questions.
Table 1 Network diagram prerequisites
Prerequisites Yes
1.a Has a network diagram been developed?
1.b Does the network diagram contain any routers, switches or bridges with corresponding
IP addresses and bandwidth values for WAN or LAN links?
Also refer to Appendix D, “Interoperability,” on page 143.
1.c Does the network diagram contain IP Addresses, netmasks, and network locations of all Business
Communications Managers?
1.d Answer this if your system will use IP trunks, otherwise, leave it blank: Does the network diagram
contain IP Addresses and netmasks of any other VoIP gateways that you need to connect to?
1.e Answer this only if your system will use a gatekeeper, otherwise, leave it blank: Does the network
diagram contain the IP address for any Gatekeeper that may be used?
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