The PVDM4 Q&A says:
Q. Where are the PVDM4 DSPs installed?
A. Unlike previous generations of PVDM2 and PVDM3 DSP modules, the PVDM4 modules are installed directly on the T1/E1 NIM. Depending on the number of channels required, the appropriate DSP module is installed on the NIM.
For IP services such as transcoding and conferencing, the PVDM4 DSP module can be installed on the motherboard of the 4451-X ISR platform.
What it does not tell: when I am in need for more than one PVDM4 DSP module (more than 256) for IP services, can I install the additional one on dummy NIM modules and use the PVDM4 module on the NIM modules also for IP services?
