I don't understand why it's necessary to allocate DSP ressource to voice termination.
normally all the voice port module (FXS, FXO, VWIC-E1, VWIC-T1) have a built in DSP. so why do we need to allocate extra DSP ressource to that.
when human voice comes in the interface, it's handle by the DSP of that interface.
I understand why DSP is used for transcoding and conferencing.
thanks for your help