[cisco-voip] DSP/conferencing question

[Ed Leatherman]

Hi all,

I'm trying to get a 3825 router to do some conferencing, but I'm having some
trouble understanding how its all supposed to work.
I'm following a document I found on CCO called "CallManager and IOS Gateway
DSP Farm Configuration Example". There are 2 PVDM2's installed on the
mainboard of the router. The router also currently has a 2MFT-T1 VWIC
installed with 1 T1 port configured (for now)

According to the guide, I need to configure DSP Farm Services on the network
module. Since the DSPs aren't on a NM but on the router mainboard, i'm
assuming I must use voice-card 0. makes sense so far to me.

Then when I get go to the next step to configure "(config)# dspfarm
confbridge max sessions <value>", the only value I can enter is 0.

Is my single active T1 port somehow consuming all the DSP resources on the
router, or is there some thing else I need to do to activate them?
router has PVDM2-48 and PVDM2-64, so I wouldnt think that would be the case.
sh inventory shows them both.

IOS ver 12.4(3c)

Thanks!
--
Ed Leatherman
IP Telephony Coordinator
West Virginia University
Telecommunications and Network Operations
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