
2004 AddPac Solution Guide May 2004
AddPac Technology Proprietary & Documentation 157 - 143
Chapter 11. Appendix
VoIP Network Check List
The below check list contains the key points considered in case of VoIP network
design. By precisely analysis customer’s current network, reliable and flexible
migration to VoIP network are possible.
# Check Point Remark
Current network environment
How many nodes are on the network including main/ local offices?
Under 50 Under 200 Under 500 Under 1,000 Over 1,000~
1
Meaning number of nodes and VoIP gateways
What is the WAN interface at main/local offices?
Main: Leased Line VPN ATM xDSL Cable Others( )
Local: Leased Line VPN ATM xDSL Cable Others( )
2
In case the data and VoIP voice network is separated, the QoS issue is less critical
then forming integrated network of voice and data
What is the average WAN bandwidth of the main/local offices?
Main: Under E1/T1 Under 45Mbps Under 155Mbps
Local: Under 64Kbps Under 512Kbps Under E1/T1 Others( )
3
y What is the bandwidth requirement of the main/local offices for data network?
y Bandwidth requirement for the main/local office for VoIP network? (Based on
number of maximum VoIP calls, codec, TCP/IP overhead. Typically, 20
20~64Kbps/ call)
What is the current network type?
Data-only Data and voice integrated Data, voice, video integrated
4
The analysis on the customer’s existing network and organization is required.
y Is the existing voice network enable to embrace VoIP network?
y Will the data and voice network be integrated or separately managed?
y Is VoIP network operating as the backup of existing TDM based voice
communication?
PSTN Environment
5 What is the total PSTN trunk lines at both the main/local offices?
Main: under 10 lines Under 30 lines Under 50 lines Under 100 lines
Others( )
Local: under 4 lines Under 10 lines Under 20 lines Under 50 lines
Others( )
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