CUBE on 4431 with PVDM4 in NMM slot

[ranjithgs]

Hi All,

Does CUBE use DSP resources of PVDM4 in NIM slot, after it runs out of credit for transcoding from the PVDM4 in ISC slot of motherboard?

URL

https://www.cisco.com/c/en/us/products/collateral/routers/4000-series-integrated-services-routers-isr/data_sheet_c78-728307.html

says "A PVDM4 module plugged into the T1/E1 NIM would be used for voice T1/E1 connectivity. Any excess channels can be reused toward other IP-based services supported on the motherboard slot"

while 

https://www.cisco.com/c/en/us/products/collateral/routers/4000-series-integrated-services-routers-isr/qa_c67-728261.html

says "You can insert PVDMs on both the motherboard and directly on some NIMs, depending on the use case. CUBE requires that PVDMs be installed on the motherboard, whereas time-division multiplexing (TDM) deployments require them to be installed directly on the NIM."

[Chris Deren · Accepted solution]

Basically if you have TDM circuits i.e. PRI they can only use PVMDs from the NIM where the card is installed. DSP services such as conferencing, transcoding can use PVDMs from the motherboard and from any NIM cards.