i have a ISR router running 12.4 software with a PVDM2-8, i want to configure the router as a conferencing only dsp, the dsp calculator suggests the follwing config
CLI Information for Optimal results.
To match the DSP Calculator configuration with your router, enter the following commands in configuration mode in your Cisco 2801 router:
codec complexity flex
Set of Conferencing/Transcoding commands when used with PVDM2-XX DSPs:
sccp local <local interface>
sccp ccm <call manager IP address> identifier <ccm ID #> version <version #>
sccp ccm group 999
bind interface <local interface>
associate cme <cme ID #> priority 1
associate profile <conferencing profile ID #> register <conference bridge name>
dspfarm profile <conferencing profile ID #> conference
maximum sessions 4
associate application SCCP
when i configure these setting it will only allow me to set max sessions to 1, this is the only option, but in the calculator recomendation it says 4 ? any clever people out there that may be able to shed some light on this.
This behaviour seems very perculiar, have you tried removing and re-applying the DSP profile?
When you removed the codecs did you shut the profile and re-apply SCCP? Firstly shutdown the profile, then shut sccp with a 'no sccp' from global, then re-apply 'sccp'. Once you have done this try creating the profile again ensuring that only G711 codecs are selected.
Can remove the dspfarm and re-create it with medium complexity, providing you remove the unwanted codecs from the list, this should still allow you 4 CFBs.