PSTN Gateway--MGCP-->CCM4.1.3--->ICT--->UCM5.1.3--->Mobility Manager/IP Phone
OutCall for MM --->MM-->ICT---4.1.3--->Original Gateway
So the question is this. Has anyone tried to place a call into a 4.1.3 system, forward it across an ICT to a 5.1.3 system with MM, then place the cooresponding OutCall back across the ICT and back out the original gateway to the person's cell phone?
When we do it, the call rings the IP Phone and the Cell but if you try to answer the cell, it sends a fast-busy.
I can't find anywhere that says this is not a viable configuration.
(rumor has it that it's working as designed, I just can't find the design reasoning anywhere)