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? | |
2 | Do the VoIP calls require compressed RTP when being sent over the WAN? |
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.