I have a 2801 with (1) PVDM2-16 and (2) VWIC2-4FXO cards. With this hardware configuration I should have 8 available PVDM channels...right? So why can't I add one conference session, for example:
dspfarm profile 1 conference
maximum sessions 1
My only option for maximum sessions is "0"
I have a different 2801 that doesn't have any VWICs on it but it does have (1) PVDM2-16. This gateway has a conference profile that allows "maximum sessions 8". The CCM SRND states that the PVDM2 can support 8 participants (I assume per session???). 8 Participants x 8 Sessions = 64. Obviously these numbers don't add up. What am I missing here????
One PVDM2-16 has one DSP chip on the PVDM module.
One separate chip is needed for conferencing. You need at least another PVDM2-8.
If you actually use the DSP calculator (I guess nobody does) you see that the minimum requirement for this is
1 PVDM2-16 and 1 PVDM2-8.
No config can save you...