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Codec Selection
The selection of codec affects the amount of bandwidth that needs to be provisioned on the WAN links. Table E-2 provides a list of questions that you need to collect from the customer regarding its codec choice.
| No. | Question | Answer |
|---|---|---|
| 1 | What codec do you want to use? |  LAN (G.711) LAN (G.729) LAN (G.723) LAN (WideBand)WAN (G.711) WAN (G.729) WAN (G.723) WAN (WideBand) |
| 2 | Do the VoIP calls require compressed RTP when being sent over the WAN? | YesNo |
Notes/Comments
You need to collect this information for each site. In case of a centralized call-processing deployment with multiple remote branch sites, you need to identify the type of codec to be used between the central site and each remote site.
