[cisco-voip] dsp calculator and optimized vs normal results

[Robert Kulagowski]

More questions on the DSP calculator:

Given a 3845 router, 24 ports of FXS on EVM, 8 ports of FXO and 6 PRIs, 
what's the best combination to achieve this?  If you just do everything 
"straight", I think you run out of DSPs on the router.

However, if you do NM-HDV2s (which have their own DSPs and can do 2 PRIs 
onboard + have a daughter card for VWIC2-2MFT-T1/E1), it looks like it's 
doable.

However, I'm not sure what to fill in for some of these fields.
In NM 1, NM-HDV2-2T1/E1, two onboard T1, and a VWIC2-2MFT-T1/E1, max 
calls is 96, which makes sense.

But when I'm filling out that line, I've got G.711 column (which I'm 
assuming is low complexity), then G729a (medium) and then G.729b (high?)

Would you put in 48 / 48 for G.711, or are you actually trying to 
predict how many of those calls need to traverse a G.729 WAN, so you'd 
do something like 36 / 12?

And in that case, what do you do on the next page when it asks about 
transcoding sessions?

For conferencing, you're putting in the number of 8-person max 
conferences that you'd like to do on the router, right?

HW MTP is only used for SIP trunks, right?

IP SLA I understand.

Thanks, Bob