I've deployed a DMA7000, RPRM and RPAD. Configuration of RPAD is done a described in the deployment guide for DMZ environment with one or more network interfaces. RPAD is provisioned by the RPRM.
Calls in and out for SIP are working fine.
But when dialling an external IP address from a HDX the call does not arrives on the RPAD. What could be the problem?
There could be many reasons why this is happening. However, I would check the DMA call history to see how the DMA processed the call. In general, I would check the RPRM site topology to make sure the RPAD internal signalling IP address is specified for ALG for each site listed. Then I would check to see the DMA dial rule is enabled to resolve IP addresses.
Some RPAD versions are support only SIP make sure you have updated software version of RPAD
As per my knowledge 3.0 & above versions supports both H.323 & SIP both