- I have 2 ip phones in site 1 with CCM 6.0 and Voice GW and the same at site 2. Two sites connect over IP WAN and using g729 when call between site.
- The problem is when site 1 receive call from site 2, and then transfer back to ip phone in site 2, it consume additional DSP resource to transcode g711 to g729 and of course, more delay
- The same issue regardless of using Inter-Cluster Trunk or IP-to-IP GW.
How do I avoid using DSP resource in this case?