1.4 DSP Resource Usage - Summary
DSP Resource Summary
•
Accurate DSP selection is only possible when you know the maximum concurrent scenarios that
will be required by the system
• In most cases, IP phones used in the office will use G722 for extension to extension calls and G711
for ISDN trunk calls so DSPs are used lightly.
• Typically only remote IP phones would use G729 mode. (Low Bandwidth)
• SIP trunk providers can use either G711 or G729 – available bandwidth on the internet/broadband
s
ervice will dictate if G711 or G729 is used.
• Use the NS1000 DSP Resource tool and Usage graph to guide you to the required DSP card.
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