Hello, I installed Elastix 1.5.2 with Digium TE120 and configured for T1 d4,ami with groundstart signalling. As was configured with existing Panasonic PBX. I can make outgoing calls without any problem but, incoming calls are not recognized by TE120 or elastix. When I call to my T1 phone number it start to ring normally and in the asterisk CLI looks like no call is ringing and if I try to make an outgoing call from Elastix while the call is ringing on my phone (not from pbx) then it open channel and answer my incoming call. I was searching and I think maybe recompiling dahdi with CONFIG_CAC_GROUNDSTART can solve my problem, but I don't know how to recompile dahdi in elastix 1.5.2 Can somebody help me with this? Thanks in advance.